@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/}
}