Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1980_1_a15, author = {Din' Bat Tkham and N. Ya. Krupnik}, title = {Perturbation of linear operators}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {74--75}, publisher = {mathdoc}, number = {1}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1980_1_a15/} }
Din' Bat Tkham; N. Ya. Krupnik. Perturbation of linear operators. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1980), pp. 74-75. http://geodesic.mathdoc.fr/item/IVM_1980_1_a15/