@article{FPM_1998_4_3_a12,
     author = {N. Kh. Rozov and V. G. Sushko and D. I. Chudova},
     title = {Differential equations with degenerate coefficient by order derivative},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {1063--1095},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1998_4_3_a12/}
}