@article{CMH_1962__37_139243,
     author = {Hans Debrunner},
     title = {Orthogonale {Dreibeine} in richtungsvollst\"andigen, stetigen {Geradenscharen} des {R3.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {36--43},
     publisher = {mathdoc},
     volume = {37},
     year = {1962},
     zbl = {0108.35104},
     url = {http://geodesic.mathdoc.fr/item/CMH_1962__37_139243/}
}