Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1990_314_1_a23, author = {V. S. Mel'nik}, title = {Extremal problems for operator-differential systems}, journal = {Doklady Akademii Nauk}, pages = {101--105}, publisher = {mathdoc}, volume = {314}, number = {1}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_1_a23/} }
V. S. Mel'nik. Extremal problems for operator-differential systems. Doklady Akademii Nauk, Tome 314 (1990) no. 1, pp. 101-105. http://geodesic.mathdoc.fr/item/DAN_1990_314_1_a23/