@article{DE_1986_22_5_a5,
     author = {Kh. T. Movlyankulov and L. V. Sharova},
     title = {An algorithm for constructing higher approximations for systems with fast and slow variables},
     journal = {Differencialʹnye uravneni\^a},
     pages = {775--780},
     publisher = {mathdoc},
     volume = {22},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_5_a5/}
}