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@article{CM_1994__90_3_351_0, author = {Hayat-Legrand, Claude}, title = {Repr\'esentation des groupes d'extension. {Applications}}, journal = {Compositio Mathematica}, pages = {351--366}, publisher = {Kluwer Academic Publishers}, volume = {90}, number = {3}, year = {1994}, mrnumber = {1272105}, zbl = {0809.55006}, language = {fr}, url = {http://geodesic.mathdoc.fr/item/CM_1994__90_3_351_0/} }
Hayat-Legrand, Claude. Représentation des groupes d'extension. Applications. Compositio Mathematica, Tome 90 (1994) no. 3, pp. 351-366. http://geodesic.mathdoc.fr/item/CM_1994__90_3_351_0/