Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_2004_40_7_a13, author = {V. G. Prikazchikov}, title = {Two-Sided {Approximation} of {Eigenvalues} of {Some} {Elliptic} {Operators}}, journal = {Differencialʹnye uravneni\^a}, pages = {994--998}, publisher = {mathdoc}, volume = {40}, number = {7}, year = {2004}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2004_40_7_a13/} }
V. G. Prikazchikov. Two-Sided Approximation of Eigenvalues of Some Elliptic Operators. Differencialʹnye uravneniâ, Tome 40 (2004) no. 7, pp. 994-998. http://geodesic.mathdoc.fr/item/DE_2004_40_7_a13/