@article{CMUC_1981__22_1_a17,
     author = {Sou\v{c}ek, Ji\v{r}{\'\i}},
     title = {On lengths of closed geodesics},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {212--213},
     publisher = {mathdoc},
     volume = {22},
     number = {1},
     year = {1981},
     zbl = {0506.53022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1981__22_1_a17/}
}