Process models for psychology. : Lecture notes of the NUFFIC international summer course, 1972.Edited by G. J. Dalenoort. Opening address by R. J. Audley. Lectures by N. V. Findler, H. Kwakernaak, S. Papert [and others. Netherlands Universities Foundation for International Co-operation. - Dalenoort, G. J. (Rotterdam University Press,, 1973)