1. Dynamic Programming;Bellman,1957
2. Discrete dynamic programming;Blackwell;Ann. Math. Stat.,1962
3. Markov Chains with Stationary Transition Probabilities;Chung,1967
4. Contraction mappings in the theory underlying dynamic programming;Denardo;SIAM Rev.,1967
5. Multichain Markov Renewal Programs;Denardo;The RAND Corporation. RM-5208-PR,1967