Arrow, 1957, Operations Research Studies in Linear and Non-Linear Programming with K.J.Arrow and Hirofumi Uzawa, 1958 On the Stability of Competitive Equilibrium I, with K.J. Arrow, 1958, Econometrica On the Stability of Competitive Equilibrium, II, with K.J. Arrow, J.D. Block, 1959, Econometrica Competitive Stability under Weak Gross Substitutability: the Euclidian distance approach with K.J. Arrow, 1960, IER Some Remarks on the Equilibria of Economic Systems with K.J. Arrow, 1960, Econometrica Conditions for Economic Efficiency of Centralized and Decentralized Structures, 1960, in Grossman, editor, Value and Plan Optimality and Informational Efficiency in Resource Allocation, 1960, in Arrow, Karlin and Suppes, editors, Mathematical Methods in Social Sciences Constraint Qualifications in Non-Linear Programming, with K.J. Arrow and H. Uzawa, 1961, Naval Research Logistics Quarterly On the Problem of Integrability of Demand Functions, 1971, in Chipman et al, editors, Preferences, Utility and Demand On the Integrability of Demand Functions, with H. Uzawa, 1971, in Chipman et al, editors, Preferences, Utility and Demand Revealed Preference without Demand Continuity Assumptions, with M.K.