@article{DE_1987_23_6_a10,
     author = {I. N. Yakushina},
     title = {Uniform asymptotic expansions for the solutions of second-order differential equations with two turning points and a complex spectral parameter},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1014--1020},
     publisher = {mathdoc},
     volume = {23},
     number = {6},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_6_a10/}
}