Toshimitsu Ohtani Toshimichi Saito Basic Bifurcation of Artificial Spiking Neurons with Triangular Base Signal. 891-894 2008 91-A IEICE Transactions 3 http://dx.doi.org/10.1093/ietfec/e91-a.3.891 db/journals/ieicet/ieicet91a.html#OhtaniS08