Geodesic
Nonabelian two-dimensional cohomology
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 27 (1972) no. 5 
A. K. Tolpygo. Nonabelian two-dimensional cohomology. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 27 (1972) no. 5. http://geodesic.mathdoc.fr/item/RM_1972_27_5_a23/
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     author = {A. K. Tolpygo},
     title = {Nonabelian two-dimensional cohomology},
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     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1972_27_5_a23/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

[1] M. Artin, Grothendieck topologies, Notes of a Seminar, Springer, 1962

[2] P. Dedecker, “Le foncteur $\mathrm{Hom}$ non abélien”, C. R. Acad. Sci. Paris, 258 (1964), 1117–1120 | MR | Zbl

[3] J. Giraud, Cohomologie non abelienne, Springer, 1971 | MR | Zbl

[4] Zh.-P. Serr, “Kogerentnye algebraicheskie puchki”, Rassloennye prostranstva, M., 1958