Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1986_12_a16, author = {B. M. Shumilov}, title = {Local uniformly minimal approximation by splines}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {72--75}, publisher = {mathdoc}, number = {12}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1986_12_a16/} }
B. M. Shumilov. Local uniformly minimal approximation by splines. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1986), pp. 72-75. http://geodesic.mathdoc.fr/item/IVM_1986_12_a16/