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Ortigueira, Manuel Duarte and Rodríguez-Germá, Luis and Trujillo, Juan J. (2011) Complex Grünwald–Letnikov, Liouville, Riemann–Liouville, and Caputo derivatives for analytic functions. Communications in Nonlinear Science and Numerical Simulation. ISSN 1007-5704. URL: http://dx.doi.org/10.1016/j.cnsns.2011.02.022.

Ortigueira, MD (2011) Fractional Calculus for Scientists and Engineers. Lecture Notes in Electrical Engineering, 84 . Springer-Verlag. ISBN 978-94-007-0746-7. eISBN 978-94-007-0747-4. ISSN 1876-1100. eISSN 1876-1119. URL: http://dx.doi.org/10.1007/978-94-007-0747-4.

Ortigueira, MD (2011) The Fractional Quantum Derivative and the Fractional Linear Scale Invariant Systems. In: Fractional Calculus for Scientists and Engineers. Lecture Notes in Electrical Engineering, 84 . Springer-Verlag, pp. 123-144. ISBN 978-94-007-0746-7. eISBN 978-94-007-0747-4. ISSN 1876-1100. eISSN 1876-1119. URL: http://dx.doi.org/10.1007/978-94-007-0747-4_6.

Ortigueira, Manuel Duarte and Trujillo, Juan J. (2011) Generalized Grünwald–Letnikov Fractional Derivative and Its Laplace and Fourier Transforms. Journal of Computational and Nonlinear Dynamics, 6 (3), 034501. ISSN 1555-1423. URL: http://dx.doi.org/10.1115/1.4003136.

Magin, Richard and Ortigueira, Manuel Duarte and Podlubny, Igor and Trujillo, Juan (2011) On the fractional signals and systems. Signal Processing, 91 (3), pp. 350-371. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2010.08.003. (ISI Web of Science, Citations: 4).

Cardoso, Eduardo (2010) Classificação automática do sono: contribuição utilizando distância de itakura-saito e wavelets. Batista, Arnaldo and Ortigueira, Manuel and Rodrigues, Rui (supervisors). Masters thesis, FCT-UNL.

Cardoso, Eduardo and Batista, Arnaldo and Rodrigues, Rui and Ortigueira, Manuel and Bárbara, Cristina and Martinho, Cristina and Rato, Raul (2010) A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_41. (ISI Web of Science).

Matos, Carlos and Ortigueira, Manuel Duarte (2010) Fractional Filters: An Optimization Approach. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_39. (ISI Web of Science).

Nascimento, Bruno and Batista, Arnaldo and Alves, Luis Brandão and Ortigueira, Manuel and Rato, Raul (2010) MicroECG: An Integrated Platform for the Cardiac Arrythmia Detection and Characterization. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_40. (ISI Web of Science).

Ortigueira, Manuel Duarte (2010) On the Fractional Linear Scale Invariant Systems. IEEE Transactions on Signal Processing, 58 (12), pp. 6406-6410. ISSN 1053-587X. eISSN 1941-0476. URL: http://dx.doi.org/10.1109/TSP.2010.2077633. (ISI Web of Science).

Gomes, Rui and Batista, Arnaldo and Ortigueira, Manuel and Rato, Raul and Baldeiras, Marco (2010) Railscan: A Tool for the Detection and Quantification of Rail Corrugation. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_44. (ISI Web of Science).

Ortigueira, Manuel D. and Coito, Fernando J. (2010) System initial conditions vs derivative initial conditions. Computers & Mathematics with Applications. ISSN 0898-1221. URL: http://dx.doi.org/10.1016/j.camwa.2009.08.036. (ISI Web of Science, Citations: 3).

Ortigueira, Manuel Duarte (2010) The fractional quantum derivative and its integral representations☆. Communications in Nonlinear Science and Numerical Simulation, 15 (4), pp. 956-962. ISSN 1007-5704. URL: http://dx.doi.org/10.1016/j.cnsns.2009.05.026. (ISI Web of Science, Citations: 3).

Simons, Lara (2009) Automatic sleep apnea detection and sleep classification using the ECG and the Sp02 signals. Batista, Arnaldo and Ortigueira, Manuel (supervisors). Masters thesis, FCT-UNL.

Nascimento, Bruno (2009) MicroECG: an integrated platform for the cardiac arrythmia detection and characterization. Batista, Arnaldo and Alves, Luís and Ortigueira, Manuel (supervisors). Masters thesis, FCT-UNL.

Baía, Pedro (2009) Processamento de sinais ECG: Variabilidade da frequência cardíaca. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

ORTIGUEIRA, M (2009) Comments on “Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions”. Applied Mathematical Modelling, 33 (5), pp. 2534-2537. ISSN 0307-904X. URL: http://dx.doi.org/10.1016/j.apm.2008.05.018. (ISI Web of Science, Citations: 2).

Ortigueira, MD (2009) Comments on “Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions”. Applied Mathematical Modelling, 33 (5), pp. 2534-2537. ISSN 0307-904X. URL: http://dx.doi.org/10.1016/j.apm.2008.05.018. (ISI Web of Science, Citations: 2).

Rato, Raul and Ortigueira, MD and Batista, AG (2009) The Empirical Mode Decomposition an Useful Tool for Signal Analysis. In: New Signal Processing Research. Nova Science Publishers, Inc.,, pp. 455-475. ISBN 978-1-60456-479-2.

Matos, C. and Batista, AG and Ortigueira, MD (2009) FILTERS: Fractional vs Integer order. [Paper]. In: Symposium on Fractional Signals and Systems, Lisbon’09, 4-6 November, 2009, FCT/UNL, Portugal.

Ortigueira, MD (2009) Fractional Derivatives and Linear Systems. In: Mobile Computing Research and Applications. Computer Science, Technology and Application . Nova Science Publishers, Inc., pp. 219-269. ISBN 978-1-60741-101-7.

Ortigueira, MD and Trujillo, JJ (2009) Generalized GL Fractional Derivative and its Laplace and Fourier Transform. [Paper]. In: ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2009, August 30 - September 2, 2009, San Diego, California, USA.

Ortigueira, MD (2009) On the Linear Scale Fractional Systems: An Application of the Fractional Quantum Derivative. [Paper]. In: On the Linear Scale Fractional Systems: An Application of the Fractional Quantum Derivative, 2-5 July 2009., Milan, Italy. (ISI Web of Science).

Ktonas, P.Y. and Golemati, S. and Xanthopoulos, P. and Sakkalis, V. and Ortigueira, M.D. and Tsekou, H. and Zervakis, M. and Paparrigopoulos, T. and Bonakis, A. and Economou, N.T. (2009) Time–frequency analysis methods to quantify the time-varying microstructure of sleep EEG spindles: Possibility for dementia biomarkers? Journal of Neuroscience Methods, 185 (1), pp. 133-142. ISSN 0165-0270. URL: http://dx.doi.org/10.1016/j.jneumeth.2009.09.001.

Barreiros, Diogo (2008) Detecção e análise do Potencial Evocado P300. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

Ortigueira, MD and Batista, AG (2008) A new look at the fractional Brownian motion definition. [Paper]. In: Sixth International Conference on Multibody Systems, Nonlinear Dynamics and Control (MSNDC), ASME IDETC07, 4-7 Sep 2007, Las Vegas, Nevada, USA. (ISI Web of Science).

Rato, R.T. and Ortigueira, Manuel and Batista, Arnaldo (2008) On the HHT, its problems, and some solutions. Mechanical Systems and Signal Processing, 22 (6), pp. 1374-1394. ISSN 0888-3270. URL: http://dx.doi.org/10.1016/j.ymssp.2007.11.028. (ISI Web of Science, Citations: 15).

Leitão, Diogo N. (2008) Análise de Fusos do Sono: decomposição e desmodulação de sinal. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

Valério, Duarte and Ortigueira, Manuel Duarte and Sá da Costa, José (2008) Identifying a Transfer Function From a Frequency Response. Journal of Computational and Nonlinear Dynamics, 3 (2), 021207. ISSN 1555-1423. URL: http://dx.doi.org/10.1115/1.2833906. (ISI Web of Science).

Rato, R.T. and Ortigueira, M. and Batista, Arnaldo (2008) The EMD and its use to identify system modes. [Paper]. In: International Workshop on New Trends in Science and Technology (NTST2008), 3-4 Nov 2008, Ankara.

Ortigueira, M. D. (2008) Fractional Central Differences and Derivatives. Journal of Vibration and Control, 14 (9-10), pp. 1255-1266. ISSN 1077-5463. URL: http://dx.doi.org/10.1177/1077546307087453. (ISI Web of Science, Citations: 7).

Coito, Fernando and Ortigueira, Manuel (2008) Fractional Controller Design Trough Multi-Objective Optimization. [Paper]. In: 8th Portuguese Conference on Automatic Control – CONTROLO’2008, 21 - 23 July 2008, Vila Real - Portugal.

Ortigueira, Manuel (2008) The Fractional Quantum Derivative and the Generalised Euler-Cauchy Equation. [Paper]. In: 2nd Conference on Nonlinear Science and Complexity, NSC08, 28-31 Jul 2008, Porto, Portugal.

Ortigueira, Manuel Duarte and Valério, Duarte and Sá da Costa, José (2008) Identifying a Transfer Function From a Frequency Response. [Paper]. In: Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C, 4-7 Sep 2007, Las Vegas. URL: http://dx.doi.org/10.1115/DETC2007-35256. (ISI Web of Science).

Ortigueira, Manuel and Coito, Fernando (2008) The Initial Conditions of Riemann-Liouville and Caputo Derivatives. [Other]. In: 6th EUROMECH Conference ENOC 2008, 30 June - 4July 2008, Saint Petersburg - RUSSIA.

Ortigueira, M. and Coito, F. (2008) Initial Conditions: What Are We Talking About? [Paper]. In: 3rd IFAC Workshop on Fractional Differentiation and its Applications, 5-7 Nov 2008, Ankara - Turquia.

ORTIGUEIRA, M and BATISTA, A (2008) On the relation between the fractional Brownian motion and the fractional derivatives. Physics Letters A, 372 (7), pp. 958-968. ISSN 0375-9601. URL: http://dx.doi.org/10.1016/j.physleta.2007.08.062. (ISI Web of Science, Citations: 13).

Ortigueira, M. (2008) A fractional quantum derivative. [Paper]. In: 3rd IFAC Workshop on Fractional Differentiation and its Applications, 5-7 Nov 2008, Ankara - Turquia.

Ortigueira, MD (2008) An introduction to the fractional continuous-time linear systems: the 21st century systems. IEEE Circuits and Systems Magazine, 8 (3), pp. 19-26. ISSN 1531-636X. URL: http://dx.doi.org/10.1109/MCAS.2008.928419.

Ortigueira, MD (2007) Riesz potentials as centred derivatives. [Paper]. In: 2nd Symposium on Fractional Derivatives and Their Applications, 24-28 Sep 2005, Long Beach, CA, USA. URL: http://dx.doi.org/10.1007/978-1-4020-6042-7. (ISI Web of Science).

Ricardo, Cesaltina N. E. and Ortigueira, Manuel D. and Gerald, José António B. (2007) New quasi-orthogonal BCH-derived sequences for CDMA applications. European Transactions on Telecommunications, 18 (7), pp. 803-810. ISSN 1124-318X. eISSN 1541-8251. URL: http://dx.doi.org/10.1002/ett.1215. (ISI Web of Science).

Ortigueira, Manuel (2007) A Non Integer Order Quantum Derivative. [Paper]. In: Symposium on Applied Fractional Calculus (SAFC07), October 15-17, Industrial Engineering School (University of Extremadura), Badajoz (Spain).

Ktonas, P.Y. and Golemati, S. and Xanthopoulos, P. and Sakkalis, V. and Ortigueira, M.D. and Tsekou, H. and Zervakis, M. and Paparrigopoulos, T. and Soldatos, C.R. (2007) Potential dementia biomarkers based on the time-varying microstructure of sleep EEG spindles. [Paper]. In: 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 22-26 Aug. 2007, Lyon, France. URL: http://dx.doi.org/10.1109/IEMBS.2007.4352827. (ISI Web of Science, Citations: 2).

Ortigueira, M.D. and Serralheiro, A.J. (2007) Pseudo-fractional ARMA modelling using a double Levinson recursion. IET Control Theory & Applications, 1 (1), p. 173. ISSN 1751-8644. URL: http://dx.doi.org/10.1049/iet-cta:20050001. (ISI Web of Science, Citations: 3).

Ortigueira, Manuel and Coito, Fernando (2007) Revisiting the Initial Conditions Problem in Fractional Linear Systems. [Other]. In: Symposium on Applied Fractional Calculus (SAFC07), October 15-17, Industrial Engineering School (University of Extremadura), Badajoz (Spain).

Ortigueira, MD (2007) Riesz Potentials as Centred Derivatives. In: Advances in Fractional Calculus. Springer Netherlands, pp. 93-112. ISBN 978-1-4020-6041-0. eISBN 978-1-4020-6042-7. URL: http://dx.doi.org/10.1007/978-1-4020-6042-7_7. (ISI Web of Science).

Xanthopoulos, P. and Golemati, S. and Sakkalis, V. and Ktonas, P. Y. and Ortigueira, Manuel and Zervakis, M. and Paparrigopoulos, T. and Tsekou, H. and Soldatos, C. R. (2006) Comparative analysis of time-frequency methods estimating the time-varying microstructure of sleep EEG spindles. [Paper]. In: Information Technology Applications in Biomedicine, 26-28 Oct. 2006, Ioannina - Epirus, Greece.

Ortigueira, MD and Serralheiro, A.J. (2006) A new least-squares approach to differintegration modeling. Signal Processing, 86 (10), pp. 2582-2591. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2006.02.013. (ISI Web of Science, Citations: 2).

Ortigueira, Manuel and Batista, Arnaldo (2006) On the fractional derivative of stationary stochastic processes. [Paper]. In: CST2006 & ECT2006 Conferences, 12-15 Sept 2006, Gran Canaria (ES).

Ortigueira, Manuel (2006) Riesz potential operators and inverses via fractional centred derivatives. International Journal of Mathematics and Mathematical Sciences, 2006, pp. 1-12. ISSN 0161-1712. URL: http://dx.doi.org/10.1155/IJMMS/2006/48391.

Ortigueira, Manuel (2006) Fractional Centred Differences and Derivatives. [Other]. In: Proceedings of the 2nd IFAC Workshop on Fractional Differentiation and its Applications, Julho 2006, Porto.

Ortigueira, MD and Machado, JAT, eds (2006) Fractional calculus applications in signals and systems. Signal Processing, 86 (10), pp. 2503-2504. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2006.02.001. (ISI Web of Science, Citations: 13).

Ortigueira, Manuel (2006) A coherent approach to non-integer order derivatives. Signal Processing, 86 (10), pp. 2505-2515. ISSN 0165-1684. (ISI Web of Science, Citations: 15).

Ortigueira, Manuel (2005) Processamento Digital de Sinais. Fundação Calouste Gulbenkian.

Ortigueira, Manuel (2005) Fractional Differences Integral Representation and its use to define Fractional Differintegrations. [Paper]. In: the ENOC-2005, Fifth EUROMECH Nonlinear Dynamics Conference, 07-12 Aug 2005, Eindhoven University of Technology, The Netherlands.

Ortigueira, Manuel (2005) A new look at the differintegration definition. [Paper]. In: ENOC-2005, Fifth EUROMECH Nonlinear Dynamics Conference, 07-12 Aug 2005, Eindhoven University of Technology, The Netherlands.

Ortigueira, Manuel and Tenreiro-Machado, J.A. and Sá da Costa, J. (2005) Which Differintegration? IEE Proceedings Vision, Image & Signal Processing, 152 (6), pp. 846-850. ISSN 1350-245X. (ISI Web of Science, Citations: 13).

Pinto, I. V. and Alves, L. B. and Ortigueira, Manuel and Batista, Arnaldo (2005) ECG Wave Detector and Delineation with Wavelets. [Paper]. In: International Conference on Computational Intelligence in Medicine and Healthcare, CIMED 2005, Costa Caparica (PT).

Rato, Raul and Ortigueira, Manuel (2005) A Modified EMD Algorithm for Application in Biomedical Signal Processing. [Paper]. In: International Conference on Computational Intelligence in Medicine and Healthcare, CIMED 2005, Costa Caparica (PT).

Ricardo, C. N. and Gerald, J. A. and Ortigueira, Manuel (2005) Analysis of New Quasi-Orthogonal BCH-Derived Sequences for CDMA Applications. [Paper]. In: XX Conference on Design of Circuits and Integrated Systems (DCIS'05), 23-25 Nov 2005, Lisboa, Portugal.

Inácio, J. A. and Gerald, J. A. and Ortigueira, Manuel (2005) New PN Even Balanced Sequences for spread spectrum systems. EURASIP Journal on Wireless Communications and Networking, 2005 (3), pp. 447-458. ISSN 1687-1472.

Ortigueira, Manuel (2005) Two new integral formulae for the Beta function. International Journal of Applied Mathematics, 18 (1), pp. 109-116. ISSN 1992-9978.

Ortigueira, MD and Batista, AG (2004) A Fractional Linear System View of the Fractional Brownian Motion. Nonlinear Dynamics, 38 (1-4), pp. 295-303. ISSN 0924-090X. (ISI Web of Science, Citations: 12).

Ortigueira, Manuel and Tenreiro-Machado, J.A. and Sá da Costa, J. (2004) Considerations about the choice of a differintegrator. [Paper]. In: International Conference on Computacional Cybernetics, 30 Aug - 01 Sept 2004, Vienna. (ISI Web of Science).

Ortigueira, Manuel and Serralheiro, A.J. (2004) New Insights into Pseudo-Fractional ARMA Modelling. [Paper]. In: International Conference on Computacional Cybernetics, 30 Aug - 01 Sept 2004, Vienna University of Technology. (ISI Web of Science).

Ortigueira, Manuel and Coito, Fernando (2004) From Differences to Derivatives. Fractional Calculus & Applied Analysis, 7 (4), pp. 459-471. ISSN 1311-0454. URL: http://www.math.bas.bg/~fcaa/.

Ortigueira, Manuel (2003) A new symmetric fractional B-spline. Signal Processing, 83 (11), pp. 2311-2318. ISSN 0165-1684. (ISI Web of Science, Citations: 1).

Unterweissacher, Martin and Goes, João and Paulino, Nuno and Evans, Guiomar and Ortigueira, Manuel (2003) Efficient Digital Self-Calibration of Video-Rate Pipeline ADCs using White Gaussian Noise. [Paper]. In: IEEE International Symposium on Circuits and Systems, Bangkok, Thailand. (ISI Web of Science).

Evans, Guiomar and Goes, João and Steiger-Garção, Adolfo and Ortigueira, MD and Paulino, Nuno and Sousa-Lopes, J. (2003) Low-voltage low-power CMOS analogue circuits for Gaussian and uniform noise generation. [Paper]. In: IEEE International Symposium on Circuits and Systems, MAY 25-28, 2003, Bangkok, Thailand. (ISI Web of Science).

Ricardo, C. N. and Inácio, J. A. and Gerald, J. A. and Ortigueira, MD (2003) New BCH-Derived Sequences for CDMA Systems. [Paper]. In: 46th IEEE - Midwest Symposium on Circuits and Systems, 27 a 30 de Dezembro de 2003, Cairo, Egipto. (ISI Web of Science).

Ortigueira, Manuel (2003) On the initial conditions continuous-time fractional linear systems. Signal Processing, 83 (11), pp. 2301-2309. ISSN 0165-1684. (ISI Web of Science, Citations: 23).

Ortigueira, Manuel and Machado, J. A., eds (2003) Special Issue on Fractional signal Processing and applications. Signal Processing, 83 (11), pp. 2285-2286. ISSN 0165-1684. (ISI Web of Science, Citations: 31).

Carvoeiras, P. and Rodrigues, M. and Batista, Arnaldo and Ortigueira, Manuel (2003) Um software protótipo para Diagnóstico da Fibrilhação Auricular. [Paper]. In: XXIV Congresso Português de Cardiologia.

Goes, João and Paulino, Nuno and Ortigueira, Manuel (2002) A Digital-Domain Self-Calibration Technique for Video-Rate Pipeline A/D Converters Using Gaussian-White Noise. IEE Electronics Letters, 38 (19), pp. 1100-1101.

Ortigueira, Manuel and Matos, C. and Piedade, M.S. (2002) Fractional Discrete-Time Signal Processing: Scale Conversion and Linear Prediction. Nonlinear Dynamics, pp. 173-190. (ISI Web of Science, Citations: 2).

Ortigueira, Manuel (2002) A new approach to the initial value problem. [Other]. In: 5th Portuguese Conference on Automatic Control, September, 5-7, 2002, Aveiro, Portugal.