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@article{DAN_1970_195_4_a1, author = {L. B. Klebanov}, title = {A certain generalization of {Craig's} theorem}, journal = {Doklady Akademii Nauk}, pages = {763--764}, publisher = {mathdoc}, volume = {195}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_195_4_a1/} }
L. B. Klebanov. A certain generalization of Craig's theorem. Doklady Akademii Nauk, Tome 195 (1970) no. 4, pp. 763-764. http://geodesic.mathdoc.fr/item/DAN_1970_195_4_a1/