Honor of Jacob Marschak, eds. C. B. McGuire and R. Radner, pp. 57-100. New York: North-Holland .
With T. Hansen. On the definition and computation of a capital stock invariant under optimization. J. Econ. Theory 5:487-523.
1975 Concepts of optimality and their uses. (Nobel lecture, December 11, 1975, Stockholm .) Am. Econ. Rev. 67:261-74; Math. Programming 11:212-28; The Scandinavian J. Econ. 78:542-60; Les Prix Nobel 275-98.
1978 Energy Modeling for an Uncertain Future. Supporting Paper 2, Report of the Modeling Resource Group, Synthesis Panel of the Committee on Nuclear and Alternative Energy System, National Research Council , National Academy of Sciences , Washington, D.C.
1979 Economics among the sciences. Am. Econ. Rev. 69:1-13.
1987 With R. B. Gordon, W. D. Nordhaus, and B. J. Skinner. Toward a New Iron Age? Quantitative Modeling of Resource Exhaustion. Cambridge : Harvard University Press .