Volume Discounts as Barriers to Entry and Access Robert C. Brooks Journal of Political Economy 1961 69(1), 63-69
Convexity Assumptions, Allocative Efficiency, and Competitive Equilibrium Tjalling C. Koopmans Journal of Political Economy 1961 69(5), 478-479
Prefaces to Liberty: Selected Writings of John Stuart Mill. Bernard Wishy Laurence C. Hunter Journal of Political Economy 1961 69(1), 102-103