Journal of Political Economy 1970 78(1), 137-138

Journal of Political Economy 1970 78(4, Part 1), 793-794

Journal of Political Economy 1968 76(5), 971-990

Journal of Political Economy 1968 76(3), 489-493

Journal of Political Economy 1967 75(2), 205-207

Journal of Political Economy 1967 75(6), 893-893

Journal of Political Economy 1967 75(4, Part 2), 431-432

Journal of Political Economy 1966 74(4), 401-402

Journal of Political Economy 1966 74(5), 512-518

Journal of Political Economy 1965 73(3), 256-283