ARTICLE McCoy_SPM_2013/IDIAP Convexity in source separation: Models, geometry, and algorithms McCoy, Michael Cevher, Volkan Tran Dinh, Quoc Asaei, Afsaneh Baldassarre, Luca EXTERNAL http://publications.idiap.ch/attachments/papers/2013/McCoy_SPM_2013.pdf PUBLIC IEEE Signal Processing Magazine, Special Issue on Source Separation and Applications 2013