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@article{FAA_1982_16_3_a24, author = {S. P. Tsarev}, title = {Which 2-forms are locally, curvature forms?}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {90--91}, publisher = {mathdoc}, volume = {16}, number = {3}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1982_16_3_a24/} }
S. P. Tsarev. Which 2-forms are locally, curvature forms?. Funkcionalʹnyj analiz i ego priloženiâ, Tome 16 (1982) no. 3, pp. 90-91. http://geodesic.mathdoc.fr/item/FAA_1982_16_3_a24/