@article{DE_2002_38_2_a7,
     author = {V. A. Chernyatin},
     title = {Higher-Order {Spectral} {Asymptotics} for the {Sturm--Liouville} {Operator}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {206--215},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_2_a7/}
}