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@article{FAA_1989_23_1_a15, author = {E. D. Nursultanov}, title = {Certain properties of the roots of a weakly hyperbolic operator pencil}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {78--79}, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1989_23_1_a15/} }
E. D. Nursultanov. Certain properties of the roots of a weakly hyperbolic operator pencil. Funkcionalʹnyj analiz i ego priloženiâ, Tome 23 (1989) no. 1, pp. 78-79. http://geodesic.mathdoc.fr/item/FAA_1989_23_1_a15/
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