1. Dynamic Programming;Bellman,1957
2. The economics of production from natural resources;Cummings;Amer. Econ. Rev.,1969
3. The optimal depletion of exhaustible resources;Dasqupta,1974
4. The Theory of Interest;Fisher,1965
5. A reinterpretation of the pure theory of exhaustion;Gordon;J. Pot. Econ.,1967