@article{DAN_1973_213_6_a6,
     author = {I. B. Simonenko},
     title = {Higher approximations of the averaging method for parabolic equations},
     journal = {Doklady Akademii Nauk},
     pages = {1255--1257},
     year = {1973},
     volume = {213},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_213_6_a6/}
}