Soft-LOST: EM on a Mixture of Oriented Lines. - Paul D. O'Grady; Barak A. Pearlmutter (ICA, 2004)

Survey of sparse and non-sparse methods in source separation. - Paul D. O'Grady; Barak A. Pearlmutter; Scott T. Rickard (Int. J. Imaging Syst. Technol., 2005)

Discovering Convolutive Speech Phones Using Sparseness and Non-negativity. - Paul D. O'Grady; Barak A. Pearlmutter (ICA, 2007)

The LOST Algorithm: Finding Lines and Separating Speech Mixtures. - Paul D. O'Grady; Barak A. Pearlmutter (EURASIP J. Adv. Signal Process., 2008)

Discovering speech phones using convolutive non-negative matrix factorisation with a sparseness constraint. - Paul D. O'Grady; Barak A. Pearlmutter (Neurocomputing, 2008)