Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1977_234_2_a7, author = {S. S. Kutateladze}, title = {Extremal operators}, journal = {Doklady Akademii Nauk}, pages = {291--293}, publisher = {mathdoc}, volume = {234}, number = {2}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a7/} }
S. S. Kutateladze. Extremal operators. Doklady Akademii Nauk, Tome 234 (1977) no. 2, pp. 291-293. http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a7/