Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1988_300_4_a2, author = {V. D. Koshmanenko}, title = {Uniqueness of a singularly perturbed operator}, journal = {Doklady Akademii Nauk}, pages = {786--789}, publisher = {mathdoc}, volume = {300}, number = {4}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1988_300_4_a2/} }
V. D. Koshmanenko. Uniqueness of a singularly perturbed operator. Doklady Akademii Nauk, Tome 300 (1988) no. 4, pp. 786-789. http://geodesic.mathdoc.fr/item/DAN_1988_300_4_a2/