@article{MAN_1965__159_182680,
     author = {P. WILKER},
     title = {Doppelloops und {Tern\"ark\"orper.}},
     journal = {Mathematische Annalen},
     pages = {172--196},
     year = {1965},
     volume = {159},
     url = {http://geodesic.mathdoc.fr/item/MAN_1965__159_182680/}
}