Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_123_4_a6, author = {B. S. Mityagin}, title = {On second mixed derivative}, journal = {Doklady Akademii Nauk}, pages = {606--609}, publisher = {mathdoc}, volume = {123}, number = {4}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_123_4_a6/} }
B. S. Mityagin. On second mixed derivative. Doklady Akademii Nauk, Tome 123 (1958) no. 4, pp. 606-609. http://geodesic.mathdoc.fr/item/DAN_1958_123_4_a6/