@article{JRAM_1979__310_152149,
     author = {A. Guichardet},
     title = {Extensions de repr\'esentations induites des produits semi-directs.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {7--32},
     publisher = {mathdoc},
     volume = {310},
     year = {1979},
     zbl = {0415.22013},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1979__310_152149/}
}