1. Un aspect de la programmation dynamique: Problème des mines d'or;Akama,1957
2. S. Azen, R. Bellman, and S. Dreyfus Some Applications of Polynomial Approximation of Dynamic Programming, RAND Corp. RM-3728-PR, Aug. 1963, 59 pp.
3. R. Beckwith, “Analytic and Computational Aspects of Dynamic Programming Processes of High Dimension”. Ph. D. thesis, Purdue Univ., 1959.
4. A short-table of z-transforms and generating functions;Beightler;Oper. Res.,1961
5. R. BellmanOn a General Class of Problems Involving Sequential Analysis. RAND Corp. RM-647, July 1951.