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@article{DAN_1964_159_4_a4, author = {M. L. Gorbachuk}, title = {A description of the continuation of positive definite kernels}, journal = {Doklady Akademii Nauk}, pages = {719--722}, publisher = {mathdoc}, volume = {159}, number = {4}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_4_a4/} }
M. L. Gorbachuk. A description of the continuation of positive definite kernels. Doklady Akademii Nauk, Tome 159 (1964) no. 4, pp. 719-722. http://geodesic.mathdoc.fr/item/DAN_1964_159_4_a4/