@article{DE_1982_18_6_a5,
     author = {V. S. Pronkin},
     title = {Application of {Newton's} method to a problem with small denominators},
     journal = {Differencialʹnye uravneni\^a},
     pages = {979--986},
     publisher = {mathdoc},
     volume = {18},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_6_a5/}
}