Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1963__151_161075, author = {B. ECKMANN and P.J. HILTON}, title = {Group-Like {Structures} in {General} {Categories} {II-Equalizers,} {Limits,} {Lengths.}}, journal = {Mathematische Annalen}, pages = {150--186}, publisher = {mathdoc}, volume = {151}, year = {1963}, zbl = {0115.01403}, url = {http://geodesic.mathdoc.fr/item/MAN_1963__151_161075/} }
B. ECKMANN; P.J. HILTON. Group-Like Structures in General Categories II-Equalizers, Limits, Lengths.. Mathematische Annalen, Tome 151 (1963), pp. 150-186. http://geodesic.mathdoc.fr/item/MAN_1963__151_161075/