@article{MZM_1989_46_4_a17,
     author = {V. N. Kolokoltsov},
     title = {Turnpikes and infinite extremals in {Markov} decision processes},
     journal = {Matemati\v{c}eskie zametki},
     pages = {118--120},
     publisher = {mathdoc},
     volume = {46},
     number = {4},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_46_4_a17/}
}