@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://www.numdam.org/item/CM_1994__90_3_351_0/}
}