Ivan Nunes da Silva A. Goedtel Rogério Andrade Flauzino The modified Hopfield architecture applied in dynamic programming problems and bipartite graph optimization. 17-26 2007 4 Int. J. Hybrid Intell. Syst. 1 http://iospress.metapress.com/openurl.asp?genre=article&issn=1448-5869&volume=4&issue=1&spage=17 db/journals/ijhis/ijhis4.html#SilvaGF07