Stationary Utility and Time Perspective Econometrica August 1962 CFDP 142 Author(s) Peter A. Diamond, Tjalling C. Koopmans & Richard E. Williamson
On the Existence of a Subinvariant Measure Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen July 1962 CFDP 143 Author(s) Tjalling C. Koopmans & Richard E. Williamson