@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/}
}