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@article{MZM_1980_28_3_a6, author = {V. G. Romanov and V. G. Yakhno}, title = {Linearized statement of the problem of determining hyperbolic operators}, journal = {Matemati\v{c}eskie zametki}, pages = {391--400}, publisher = {mathdoc}, volume = {28}, number = {3}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1980_28_3_a6/} }
V. G. Romanov; V. G. Yakhno. Linearized statement of the problem of determining hyperbolic operators. Matematičeskie zametki, Tome 28 (1980) no. 3, pp. 391-400. http://geodesic.mathdoc.fr/item/MZM_1980_28_3_a6/