@article{MZ_1979__166_172830,
     author = {Marcel Evrard},
     title = {Homotopie des foncteurs en groupes.},
     journal = {Mathematische Zeitschrift},
     pages = {277--288},
     publisher = {mathdoc},
     volume = {166},
     year = {1979},
     zbl = {0415.18014},
     url = {http://geodesic.mathdoc.fr/item/MZ_1979__166_172830/}
}