@article{CMH_1955__29_139110,
     author = {Walter Nohl},
     title = {Kosmologische {L\"osungen} eines homogenen {Wirkungsprinzips.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {338--350},
     publisher = {mathdoc},
     volume = {29},
     year = {1955},
     zbl = {0065.21102},
     url = {http://geodesic.mathdoc.fr/item/CMH_1955__29_139110/}
}