Etienne Hugues Florent Guilleux Olivier Rochel Contour Detection by Synchronization of Integrate-and-Fire Neurons. 60-69 2002 conf/bmcv/2002 Biologically Motivated Computer Vision http://link.springer.de/link/service/series/0558/bibs/2525/25250060.htm db/conf/bmcv/bmcv2002.html#HuguesGR02