$a The Warsaw Colloquium on Instrumental Conditioning and Brain Research : proceedings of the symposium to honour the memory of Jerzy Konorski and 60 years of the Nencki Institute, held in Jabłonna near Warsaw, 1-5 May 1979 / ed. by Bogusław Żernicki and Kazimierz Zieliński. - Warszawa ; The Hague [etc.], 1980. $b (Department of Neurophysiology Nencki Institute of Experimental Biology, Warsaw)