@article{DE_1988_24_6_a12,
     author = {S. Z. Levendorskii},
     title = {Nonclassical spectral asymptotics in the case of degeneration that is not in a power form},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1021--1027},
     publisher = {mathdoc},
     volume = {24},
     number = {6},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_6_a12/}
}