Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1991_27_7_a15, author = {N. Yu. Orlov}, title = {A variational approach to the determination of the energy spectrum of bound electrons}, journal = {Differencialʹnye uravneni\^a}, pages = {1237--1245}, publisher = {mathdoc}, volume = {27}, number = {7}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_7_a15/} }
N. Yu. Orlov. A variational approach to the determination of the energy spectrum of bound electrons. Differencialʹnye uravneniâ, Tome 27 (1991) no. 7, pp. 1237-1245. http://geodesic.mathdoc.fr/item/DE_1991_27_7_a15/