Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1989_25_11_a4, author = {V. E. Volkov}, title = {Boundedness of the number of orthogonal solutions of the equation $-u''+q(x)u=\lambda u$}, journal = {Differencialʹnye uravneni\^a}, pages = {1862--1866}, publisher = {mathdoc}, volume = {25}, number = {11}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_11_a4/} }
TY - JOUR AU - V. E. Volkov TI - Boundedness of the number of orthogonal solutions of the equation $-u''+q(x)u=\lambda u$ JO - Differencialʹnye uravneniâ PY - 1989 SP - 1862 EP - 1866 VL - 25 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1989_25_11_a4/ LA - ru ID - DE_1989_25_11_a4 ER -
V. E. Volkov. Boundedness of the number of orthogonal solutions of the equation $-u''+q(x)u=\lambda u$. Differencialʹnye uravneniâ, Tome 25 (1989) no. 11, pp. 1862-1866. http://geodesic.mathdoc.fr/item/DE_1989_25_11_a4/