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@article{DAN_1970_194_3_a14, author = {V. A. Yakubovich}, title = {Factorization of symmetric matrix polynomials}, journal = {Doklady Akademii Nauk}, pages = {532--535}, publisher = {mathdoc}, volume = {194}, number = {3}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_3_a14/} }
V. A. Yakubovich. Factorization of symmetric matrix polynomials. Doklady Akademii Nauk, Tome 194 (1970) no. 3, pp. 532-535. http://geodesic.mathdoc.fr/item/DAN_1970_194_3_a14/