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@article{DAN_1965_163_2_a10, author = {M. N. Yakovlev}, title = {Estimates of the $H$-condition numbers of matrices in the {Petrov--Galerkin} method}, journal = {Doklady Akademii Nauk}, pages = {309--310}, publisher = {mathdoc}, volume = {163}, number = {2}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_163_2_a10/} }
M. N. Yakovlev. Estimates of the $H$-condition numbers of matrices in the Petrov--Galerkin method. Doklady Akademii Nauk, Tome 163 (1965) no. 2, pp. 309-310. http://geodesic.mathdoc.fr/item/DAN_1965_163_2_a10/