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@article{DAN_1968_178_4_a0, author = {A. N. Berlinskii}, title = {The number of elliptic regions adjoining a singular point}, journal = {Doklady Akademii Nauk}, pages = {759--762}, publisher = {mathdoc}, volume = {178}, number = {4}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_4_a0/} }
A. N. Berlinskii. The number of elliptic regions adjoining a singular point. Doklady Akademii Nauk, Tome 178 (1968) no. 4, pp. 759-762. http://geodesic.mathdoc.fr/item/DAN_1968_178_4_a0/