@article{PMFA_1994_39_5_a1,
     author = {Vacek, Karel},
     title = {Sv\v{e}tlo a \v{z}iv\'e syst\'emy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {251--259},
     year = {1994},
     volume = {39},
     number = {5},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1994_39_5_a1/}
}