@article{GDZPPN00242150X, title = {Group Extensions and Splitting Modules.}, journal = {Mathematische Zeitschrift}, volume = {162}, year = {1978}, pages = {177-186}, zbl = {0373.20042}, url = {http://dml.mathdoc.fr/item/GDZPPN00242150X} }
Schmid, Peter. Group Extensions and Splitting Modules.. Mathematische Zeitschrift, Tome 162 (1978) pp. 177-186. http://gdmltest.u-ga.fr/item/GDZPPN00242150X/