Naohiro Ishii Toshinori Deguchi Masashi Kawaguchi Neural Computations by Asymmetric Networks with Nonlinearities. 37-45 2007 conf/icannga/2007-2 ICANNGA (2) http://dx.doi.org/10.1007/978-3-540-71629-7_5 db/conf/icannga/icannga2007-2.html#IshiiDK07