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@article{DE_1985_21_6_a28, author = {P. A. Mishnaevskii}, title = {Length of the gaps in the continuous spectrum of the {Sturm--Liouville} operator}, journal = {Differencialʹnye uravneni\^a}, pages = {1095--1097}, publisher = {mathdoc}, volume = {21}, number = {6}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1985_21_6_a28/} }
P. A. Mishnaevskii. Length of the gaps in the continuous spectrum of the Sturm--Liouville operator. Differencialʹnye uravneniâ, Tome 21 (1985) no. 6, pp. 1095-1097. http://geodesic.mathdoc.fr/item/DE_1985_21_6_a28/