Negative utilitarianismEthics". In J. Lee Auspitz, Wojciech W. Gasparski, Marek K. Mlicki, and Klemens Szaniawski, eds., Praxiologies and the Philosophy of Economics. New Brunswick
Logology (science)Dordrecht, D. Reidel Publishing Company, 1982, ISBN 83-01-03607-9, p. XI. Klemens Szaniawski, "Preface", Polish Contributions to the Science of Science, p. VIII