Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1950__24_138999, author = {B. Eckmann and E.R. Br\"andli}, title = {Cartes{\'\i}sches und {Alexandersches} {Produkt} in der {Cohomologietheorie.}}, journal = {Commentarii mathematici Helvetici}, pages = {68--72}, publisher = {mathdoc}, volume = {24}, year = {1950}, zbl = {0039.19001}, url = {http://geodesic.mathdoc.fr/item/CMH_1950__24_138999/} }
B. Eckmann; E.R. Brändli. Cartesísches und Alexandersches Produkt in der Cohomologietheorie.. Commentarii mathematici Helvetici, Tome 24 (1950), pp. 68-72. http://geodesic.mathdoc.fr/item/CMH_1950__24_138999/