@article{MMO_1967_17_a1,
     author = {A. L. Oni\v{s}\v{c}ik},
     title = {Certain concepts and applications of the theory of nonabelian cohomologies},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {45--88},
     publisher = {mathdoc},
     volume = {17},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1967_17_a1/}
}