@article{IM2_1989_33_2_a0,
     author = {A. Yu. Veretennikov},
     title = {On~rate of mixing and the averaging principle for hypoelliptic stochastic differential equations},
     journal = {Izvestiya. Mathematics },
     pages = {221--231},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1989_33_2_a0/}
}