@article{IVM_1981_7_a13,
     author = {G. D. Peshatov},
     title = {A~generalization of the expansion method in two variables},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {85--87},
     year = {1981},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1981_7_a13/}
}