C. C. Walker

Instability of Pulse Activity in a Net with Threshold

W. Ashby, H. Foerster, C. C. Walker, 1962, Nature.

A Comparison of Overt and Covert Response in Programmed Learning

C. C. Walker, L. Stolurow, 1962 .

The Essential Instability of Systems with Threshold, and some Possible Applications to Psychiatry

H. Von Foerster, C. C. Walker, W. R. Ashby, 1963 .