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@article{DE_1983_19_2_a8, author = {M. V. Fedoryuk}, title = {The {Sturm--Liouville} problem with regular singular {points.~II}}, journal = {Differencialʹnye uravneni\^a}, pages = {278--286}, publisher = {mathdoc}, volume = {19}, number = {2}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_2_a8/} }
M. V. Fedoryuk. The Sturm--Liouville problem with regular singular points.~II. Differencialʹnye uravneniâ, Tome 19 (1983) no. 2, pp. 278-286. http://geodesic.mathdoc.fr/item/DE_1983_19_2_a8/