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@article{DAN_1979_245_1_a7, author = {A. Fraguela Collar}, title = {On the perturbation of a polyharmonic operator by potentials with small supports}, journal = {Doklady Akademii Nauk}, pages = {34--36}, publisher = {mathdoc}, volume = {245}, number = {1}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_245_1_a7/} }
A. Fraguela Collar. On the perturbation of a polyharmonic operator by potentials with small supports. Doklady Akademii Nauk, Tome 245 (1979) no. 1, pp. 34-36. http://geodesic.mathdoc.fr/item/DAN_1979_245_1_a7/