Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1954__28_139087, author = {George W. Whitehead}, title = {On mappings into group-like spaces.}, journal = {Commentarii mathematici Helvetici}, pages = {320--328}, publisher = {mathdoc}, volume = {28}, year = {1954}, zbl = {0058.16801}, url = {http://geodesic.mathdoc.fr/item/CMH_1954__28_139087/} }
George W. Whitehead. On mappings into group-like spaces.. Commentarii mathematici Helvetici, Tome 28 (1954), pp. 320-328. http://geodesic.mathdoc.fr/item/CMH_1954__28_139087/