@article{10_21136_CPMF_1935_123598,
     author = {Funk, Paul},
     title = {\"Uber zwei-dimensionale {R\"aume} mit konstanter {Kr\"ummung} und geradlinigen {Extremalen}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {190},
     year = {1935},
     volume = {64},
     number = {6},
     doi = {10.21136/CPMF.1935.123598},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1935.123598/}
}