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@article{DAN_1961_137_6_a15, author = {L. P. Usol'tsev}, title = {An analogue of the {Fortet--Kac} theorem}, journal = {Doklady Akademii Nauk}, pages = {1315--1318}, publisher = {mathdoc}, volume = {137}, number = {6}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a15/} }
L. P. Usol'tsev. An analogue of the Fortet--Kac theorem. Doklady Akademii Nauk, Tome 137 (1961) no. 6, pp. 1315-1318. http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a15/