@article{PMFA_2009__54_4_a1,
     author = {\v{S}{\'\i}ma, Zdislav},
     title = {Za tajemstv{\'\i}m pra\v{z}sk\'eho orloje: ot\'azky a odpov\v{e}di},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {269--275},
     publisher = {mathdoc},
     volume = {54},
     number = {4},
     year = {2009},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2009__54_4_a1/}
}