Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1989_25_9_a3, author = {G. G. Islamov}, title = {Estimates for a minimal rank of finite-dimensional perturbations of {Green} operators}, journal = {Differencialʹnye uravneni\^a}, pages = {1496--1503}, publisher = {mathdoc}, volume = {25}, number = {9}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_9_a3/} }
G. G. Islamov. Estimates for a minimal rank of finite-dimensional perturbations of Green operators. Differencialʹnye uravneniâ, Tome 25 (1989) no. 9, pp. 1496-1503. http://geodesic.mathdoc.fr/item/DE_1989_25_9_a3/