@article{MZM_2018_104_4_a10,
     author = {N. F. Valeev and O. V. Myakinova and Ya. T. Sultanaev},
     title = {On the {Asymptotics} of {Solutions} of a {Singular} $n${th-Order} {Differential} {Equation} with {Nonregular} {Coefficients}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {626--631},
     publisher = {mathdoc},
     volume = {104},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2018_104_4_a10/}
}