Darryl Charles Jos Koetsier Donald MacDonald Colin Fyfe Multi-stream Exploratory Projection Pursuit for the Formation of Complex Cells Similar to Visual Cortical Neurons. 210-215 2002 conf/icann/2002 ICANN http://link.springer.de/link/service/series/0558/bibs/2415/24150210.htm db/conf/icann/icann2002.html#CharlesKMF02