F.E, Cardoso, Batista; Arnaldo, V. Vassilenko, F. Serrano, and M. Ortigueira. "Idle Tone Detection in Biomedical Signals Using Time-Frequency Techniques." IFIP Advances in Information and Communication Technology. Ed. Technological Innovation Life Improvement. DoCEIS for 2020. Springer, 2020.
Costa, J. C., M. D. Ortigueira, and AG Batista. "ARMA Modelling of Sleep Spindles." Second IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems. Doceis, 2011.
Pinto, I., L. B. Alves, M. D. Ortigueira, and Batista A.G. "ECG Wave Detection and Delineation with Wavelets." Computational Intelligence in Medicine and Healthcare Conference . Biopattern, 2005.
Rato, R. T., M. D. Ortigueira, and AG Batista. "The EMD and its Use to Identify System Modes." Proceedings of the International Workshop on New Trends in Science and Technology. 2008.
Carlos, Matos, Batista Arnaldo, and Manuel Ortigueira. "FILTERS: Fractional vs Integer Order." Symposium on Fractional Signals and Systems. 2009.