@article{DE_1987_23_10_a15,
     author = {A. A. Pankov},
     title = {Averaging of elliptic operators with a high order of nonlinearity in the lower terms},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1786--1791},
     publisher = {mathdoc},
     volume = {23},
     number = {10},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_10_a15/}
}