1 M.. Saffman, D.. Montgomery, B.M. Zwickl, K.. Kuroda, and D.Z. Anderson, Physical Review A 48, (1993).
1 D.Z. Anderson, C.. Benkert, and D.. Crouch, in Neural Networks for Perception (Harcourt Brace & Co., Orlando, FL, USA, 1992), pp. 214–252.