@article{GDZPPN002539357,
title = {Kann fibrations which are homomorphisms of simplicial groups},
journal = {Revista colombiana de matematicas},
volume = {7},
year = {1973},
pages = {23-44},
zbl = {0267.55024},
url = {http://dml.mathdoc.fr/item/GDZPPN002539357}
}
Ruiz Salguero, C.; Ruiz, R. Kann fibrations which are homomorphisms of simplicial groups. Revista colombiana de matematicas, Tome 7 (1973) pp. 23-44. http://gdmltest.u-ga.fr/item/GDZPPN002539357/