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@article{FAA_1979_13_4_a23, author = {B. L. Feigin and D. B. Fuchs}, title = {Invariant differential operators on the line}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {91--92}, publisher = {mathdoc}, volume = {13}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1979_13_4_a23/} }
B. L. Feigin; D. B. Fuchs. Invariant differential operators on the line. Funkcionalʹnyj analiz i ego priloženiâ, Tome 13 (1979) no. 4, pp. 91-92. http://geodesic.mathdoc.fr/item/FAA_1979_13_4_a23/
[1] Kirillov A.A., Estestvennye differentsialnye operatsii nad tenzornymi polyami, Preprint IPM AN SSSR No 56, 1979 | MR