Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1959__71_169792, author = {Karl Heinrich Hofmann}, title = {Topologische distributive {Doppelloops.}}, journal = {Mathematische Zeitschrift}, pages = {36--68}, publisher = {mathdoc}, volume = {71}, year = {1959}, zbl = {0095.02704}, url = {http://geodesic.mathdoc.fr/item/MZ_1959__71_169792/} }
Karl Heinrich Hofmann. Topologische distributive Doppelloops.. Mathematische Zeitschrift, Tome 71 (1959), pp. 36-68. http://geodesic.mathdoc.fr/item/MZ_1959__71_169792/