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@article{DE_1988_24_9_a28, author = {A. K. Pulatov}, title = {Zeros of the eigenfunctions of the singular operator $(-\Delta)^m+q(x)$}, journal = {Differencialʹnye uravneni\^a}, pages = {1649--1650}, publisher = {mathdoc}, volume = {24}, number = {9}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1988_24_9_a28/} }
A. K. Pulatov. Zeros of the eigenfunctions of the singular operator $(-\Delta)^m+q(x)$. Differencialʹnye uravneniâ, Tome 24 (1988) no. 9, pp. 1649-1650. http://geodesic.mathdoc.fr/item/DE_1988_24_9_a28/