@article{PMFA_1993_38_1_a0,
     author = {Vacek, Karel},
     title = {\v{Z}ivot a symetrie},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {1--6},
     year = {1993},
     volume = {38},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1993_38_1_a0/}
}