@article{PMFA_1971_16_6_a1,
     author = {Horsk\'y, Zden\v{e}k},
     title = {Johannes {Kepler}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {281--285},
     year = {1971},
     volume = {16},
     number = {6},
     mrnumber = {0490726},
     zbl = {0228.01010},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1971_16_6_a1/}
}