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.
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.
Carneiro, M., AG Batista, and M. D. OrtigueiraEEG artifact removal with ICA analysis. Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2011., 2011.
Costa, J., Manuel D. Ortigueira, and Arnaldo BatistaARMA Modelling for Sleep Disorders Diagnose. Technological Innovation for the Internet of Things. Portugal: Springer IFIP AICT series, 2013.