@article{10_21136_CPMF_1949_109138,
     author = {P{\'\i}rko, Zden\v{e}k},
     title = {Ke kinematice kot\'alnic},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {D63},
     publisher = {mathdoc},
     volume = {74},
     number = {1},
     year = {1949},
     doi = {10.21136/CPMF.1949.109138},
     mrnumber = {0031851},
     zbl = {0033.30201},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1949.109138/}
}