Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1967_176_1_a10, author = {S. Ya. Yakubov}, title = {Nonlinear abstract hyperbolic equations}, journal = {Doklady Akademii Nauk}, pages = {46--49}, publisher = {mathdoc}, volume = {176}, number = {1}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1967_176_1_a10/} }
S. Ya. Yakubov. Nonlinear abstract hyperbolic equations. Doklady Akademii Nauk, Tome 176 (1967) no. 1, pp. 46-49. http://geodesic.mathdoc.fr/item/DAN_1967_176_1_a10/