@article{GDZPPN002030810, title = {Functional equations in dynamic programming.}, journal = {Aequationes mathematicae}, volume = {18}, year = {1978}, pages = {1-18}, zbl = {0397.39016}, url = {http://dml.mathdoc.fr/item/GDZPPN002030810} }
Bellman, Richard; Lee, E. Stanley. Functional equations in dynamic programming.. Aequationes mathematicae, Tome 18 (1978) pp. 1-18. http://gdmltest.u-ga.fr/item/GDZPPN002030810/