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@article{FAA_1972_6_2_a1, author = {V. I. Arnol'd}, title = {Modes and quasimodes}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {12--20}, publisher = {mathdoc}, volume = {6}, number = {2}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1972_6_2_a1/} }
V. I. Arnol'd. Modes and quasimodes. Funkcionalʹnyj analiz i ego priloženiâ, Tome 6 (1972) no. 2, pp. 12-20. http://geodesic.mathdoc.fr/item/FAA_1972_6_2_a1/