@article{DE_1974_10_10_a8,
     author = {A. A. Stakun},
     title = {Some identities for the eigenvalues of a second order differential operator that has a point of swerve},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1819--1827},
     publisher = {mathdoc},
     volume = {10},
     number = {10},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_10_a8/}
}