@article{DE_1975_11_9_a5,
     author = {V. B. Kolmanovskii},
     title = {Optimal control of certain nonlinear systems with a small parameter},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1584--1594},
     publisher = {mathdoc},
     volume = {11},
     number = {9},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_9_a5/}
}