Game Theory and the Social Contract (1994), p. 152 http://books.google.com/books?id=8cDiGo2REBIC&pg=PA152
Kenneth George "Ken" Binmore, is a British mathematician, economist, and game theorist. He is a Professor Emeritus of Economics at University College London and a Visiting Emeritus Professor of Economics at the University of Bristol.He is one of the founders of the modern economic theory of bargaining , and has made important contributions to the foundations of game theory, experimental economics, and evolutionary game theory, as well as to analytical philosophy. Binmore took up economics after a career in mathematics, during which he held the Chair of Mathematics at the London School of Economics. Since his switch to economics he has been at the forefront of developments in game theory. His other research interests include political and moral philosophy, decision theory, and statistics. He is the author of more than 100 scholarly papers and 14 books. Wikipedia
Game Theory and the Social Contract (1994), p. 152 http://books.google.com/books?id=8cDiGo2REBIC&pg=PA152