@article{10_21136_CPM_1970_117687,
     author = {Mahel, Vladim{\'\i}r},
     title = {Zaj{\'\i}mav\'a grupa transformac{\'\i}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {76--85},
     publisher = {mathdoc},
     volume = {095},
     number = {1},
     year = {1970},
     doi = {10.21136/CPM.1970.117687},
     mrnumber = {0305221},
     zbl = {0195.22503},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1970.117687/}
}