Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1988_6_a7, author = {E. R. Matveev}, title = {``Super-one-sided'' approximation by splines of functions of several variables}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {49--54}, publisher = {mathdoc}, number = {6}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1988_6_a7/} }
E. R. Matveev. ``Super-one-sided'' approximation by splines of functions of several variables. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1988), pp. 49-54. http://geodesic.mathdoc.fr/item/IVM_1988_6_a7/