@article{JRAM_1958__199_150358,
     author = {Arthur Mo\'or},
     title = {Untersuchungen in {R\"aumen} mit rekurrenter {Kr\"ummung.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {91--99},
     publisher = {mathdoc},
     volume = {199},
     year = {1958},
     zbl = {0081.16202},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1958__199_150358/}
}