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@article{DAN_1969_184_2_a5, author = {G. I. Perel'muter}, title = {A certain conjecture of {K.~Williams}}, journal = {Doklady Akademii Nauk}, pages = {282--284}, publisher = {mathdoc}, volume = {184}, number = {2}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_2_a5/} }
G. I. Perel'muter. A certain conjecture of K.~Williams. Doklady Akademii Nauk, Tome 184 (1969) no. 2, pp. 282-284. http://geodesic.mathdoc.fr/item/DAN_1969_184_2_a5/