@article{PMFA_1968_13_6_a0,
     author = {Langer, Ji\v{r}{\'\i}},
     title = {Experiment\'aln{\'\i} ov\v{e}\v{r}en{\'\i} obecn\'e relativity},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {333--356},
     year = {1968},
     volume = {13},
     number = {6},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1968_13_6_a0/}
}