Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1980_4_a14, author = {A. Khatamov}, title = {Approximation of functions with a~convex derivative by means of splines}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {87--95}, publisher = {mathdoc}, number = {4}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1980_4_a14/} }
A. Khatamov. Approximation of functions with a~convex derivative by means of splines. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1980), pp. 87-95. http://geodesic.mathdoc.fr/item/IVM_1980_4_a14/