@article{DE_1974_10_6_a8,
     author = {M. V. Fedoryuk and G. V. Zhdanova},
     title = {Asymptotic behavior of the eigenvalues and eigenfunctions of the {Sturm--Liouville} operator with a complex-valued polynomial {potential.~II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1067--1073},
     publisher = {mathdoc},
     volume = {10},
     number = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_6_a8/}
}