Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1975_138_a1, author = {V. V. Arestov}, title = {Approximation of linear operators, and related extremal problems}, journal = {Informatics and Automation}, pages = {29--42}, publisher = {mathdoc}, volume = {138}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1975_138_a1/} }
V. V. Arestov. Approximation of linear operators, and related extremal problems. Informatics and Automation, Approximation of functions and operators, Tome 138 (1975), pp. 29-42. http://geodesic.mathdoc.fr/item/TRSPY_1975_138_a1/