Josef Kittler Reza Ghaderi Terry Windeatt Jiri Matas Face verification via error correcting output codes. 1163-1169 2003 21 Image Vision Comput. 13-14 http://dx.doi.org/10.1016/j.imavis.2003.09.013 db/journals/ivc/ivc21.html#KittlerGWM03