Lewis, H. Gregg; Morgenstern, Oskar - In: Papers and proceedings of the annual meeting of the … 38 (1948) 2, pp. 1-18
Morgenstern, Oskar: Oligopoly, monopolistic competition, and the theory of games. S. 10-18 …Lewis, H. Gregg: Some observations on duopoly theory. S. 1-9 …