Masanori Ito Noboru Ohnishi Ali Mansour Mitsuru Kawamoto Blind Source Separation Coping with the Change of the Number of Sources. 509-518 2007 ICONIP (2) http://dx.doi.org/10.1007/978-3-540-69162-4_53 conf/iconip/2007-2 db/conf/iconip/iconip2007-2.html#ItoOMK07