@article{02125642,
title = {Baer invariants in semi-abelian categories II: Homology.},
journal = {Theory and Applications of Categories [electronic only]},
volume = {12},
year = {2004},
pages = {195-224},
zbl = {1065.18012},
language = {en},
url = {http://dml.mathdoc.fr/item/02125642}
}
Everaert, T.; Van der Linden, T. Baer invariants in semi-abelian categories II: Homology.. Theory and Applications of Categories [electronic only], Tome 12 (2004) pp. 195-224. http://gdmltest.u-ga.fr/item/02125642/