@article{1178242546, author = {Gamst, J. and Hoechsmann, K.}, title = {Ext-products and edge-morphisms}, journal = {Tohoku Math. J. (2)}, volume = {23}, number = {4}, year = {1971}, pages = { 581-588}, language = {en}, url = {http://dml.mathdoc.fr/item/1178242546} }
Gamst, J.; Hoechsmann, K. Ext-products and edge-morphisms. Tohoku Math. J. (2), Tome 23 (1971) no. 4, pp. 581-588. http://gdmltest.u-ga.fr/item/1178242546/