Kazuyuki Hiraoka Ken-ichi Hidai Masashi Hamahira Hiroshi Mizoguchi Tanaka Mishima Shuji Yoshizawa Successive Learning of Linear Discriminant Analysis: Sanger-Type Algorithm. 2664-2667 2000 ICPR http://csdl.computer.org/comp/proceedings/icpr/2000/0750/02/07502664abs.htm db/conf/icpr/icpr2000-2.html#HiraokaHHMMY00