@article{DAN_1991_320_3_a0,
     author = {G. K. Abduvalieva and V. G. Sushko},
     title = {Asymptotic representations of solutions of some singularly},
     journal = {Doklady Akademii Nauk},
     pages = {521--524},
     publisher = {mathdoc},
     volume = {320},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_320_3_a0/}
}