History
Early 1960’s - Rosenblatt’s Perceptron (Rosenblatt, F., Principles of Neurodynamics, New York: Spartan Books, 1962).
Late 1960’s - Minsky (Minsky, M. and Papert, S., Perceptrons, MIT Press, Cambridge, 1969).
1970’s & early 1980’s - largely empty of NN activity due to Minsky.