@article{CTGDC_1990__31_2_121_0,
     author = {Ellis, Graham J.},
     title = {Relative derived functors and the homology of groups},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {121--135},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {31},
     number = {2},
     year = {1990},
     mrnumber = {1080240},
     zbl = {0715.20035},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1990__31_2_121_0/}
}