Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1963_150_5_a12, author = {V. T. Kharin}, title = {An estimate of the accuracy of approximate eigenvalues and vectors}, journal = {Doklady Akademii Nauk}, pages = {1001--1004}, publisher = {mathdoc}, volume = {150}, number = {5}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_5_a12/} }
V. T. Kharin. An estimate of the accuracy of approximate eigenvalues and vectors. Doklady Akademii Nauk, Tome 150 (1963) no. 5, pp. 1001-1004. http://geodesic.mathdoc.fr/item/DAN_1963_150_5_a12/