@article{SM_1991_69_1_a15,
     author = {A. Yu. Veretennikov},
     title = {On the averaging principle for systems of stochastic differential equations},
     journal = {Sbornik. Mathematics},
     pages = {271--284},
     publisher = {mathdoc},
     volume = {69},
     number = {1},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1991_69_1_a15/}
}