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On the second cohomology categorical group and a Hochschild-Serre 2-exact sequence

Bibliographic reference Garzón, Antonio R. ; Vitale, Enrico. On the second cohomology categorical group and a Hochschild-Serre 2-exact sequence. In: Theory and Applications of Categories, Vol. 30, p. 933-984 (2015)
Permanent URL http://hdl.handle.net/2078.1/173367