A homological exact sequence associated with a family of normal subgroups
Cahiers de Topologie et Géométrie Différentielle Catégoriques, Volume 28 (1987) no. 1, p. 79-82 
@article{CTGDC_1987__28_1_79_0,
     author = {Rodicio, Antonio G.},
     title = {A homological exact sequence associated with a family of normal subgroups},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {28},
     number = {1},
     year = {1987},
     pages = {79-82},
     zbl = {0632.20033},
     mrnumber = {903154},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1987__28_1_79_0}
}

Rodicio, Antonio G. A homological exact sequence associated with a family of normal subgroups. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Volume 28 (1987) no. 1, pp. 79-82. http://www.numdam.org/item/CTGDC_1987__28_1_79_0/

1 R. Brown & J.-L. Loday, Excision homotopique en basse dimension, C.R.A.S. Paris 298, Ser, I (1984), 353-356, | MR 745014 | Zbl 0573.55011

2, A.G. Rodicio, On some five-term exact sequences in homology, Comm, in Algebra, 14 (1986), 1357-1364 | MR 842044 | Zbl 0598.16027