Jinwuk Seok Jeun-Woo Lee The Analysis of a Stochastic Differential Approach for Langevine Comepetitive Learning Algorithm. 80-83 2002 ICPR (2) http://doi.ieeecomputersociety.org/10.1109/ICPR.2002.1048242 db/conf/icpr/icpr2002-2.html#SeokL02