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@article{CM_1996__102_2_203_0, author = {Neeman, Amnon and Retakh, Vladimir}, title = {Extension categories and their homotopy}, journal = {Compositio Mathematica}, pages = {203--242}, publisher = {Kluwer Academic Publishers}, volume = {102}, number = {2}, year = {1996}, mrnumber = {1394526}, zbl = {0852.18011}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1996__102_2_203_0/} }
Neeman, Amnon; Retakh, Vladimir. Extension categories and their homotopy. Compositio Mathematica, Tome 102 (1996) no. 2, pp. 203-242. http://geodesic.mathdoc.fr/item/CM_1996__102_2_203_0/