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@article{DAN_1980_254_3_a8, author = {A. N. Tikhonov}, title = {On normal solutions of approximate systems of linear algebraic equations}, journal = {Doklady Akademii Nauk}, pages = {549--554}, publisher = {mathdoc}, volume = {254}, number = {3}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_254_3_a8/} }
A. N. Tikhonov. On normal solutions of approximate systems of linear algebraic equations. Doklady Akademii Nauk, Tome 254 (1980) no. 3, pp. 549-554. http://geodesic.mathdoc.fr/item/DAN_1980_254_3_a8/