@article{DE_1981_17_11_a17,
     author = {B. V. Loginov and D. G. Rakhimov},
     title = {On the connection between the method of false perturbations, analytical perturbations, and differential equations with degeneration},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2090--2093},
     publisher = {mathdoc},
     volume = {17},
     number = {11},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_11_a17/}
}