“Continuous Representation of Preferences,” Review of Economic Studies, vol. 47, pp. 959-963, 1980.
“Application of Functional Analysis to Models of Efficient Allocation of Economic Resources,” with P. J. Kalman, Journal of Optimization Theory and Applications, vol. 30, no. 1, pp. 19-32, January, 1980.
“A Model of the Relation between Technology and North-South Income Distribution,” with S. Cole and J. Clark, Models, Planning and Basic Needs (Eds. S. Cole, H. Lucas), Pergamon Press, pp. 87-96, 1979.