@article{PMFA_2013_58_3_a7,
     author = {Vrba, Anton{\'\i}n},
     title = {Orloj na nejstar\v{s}{\'\i}ch fotografi{\'\i}ch},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {221--224},
     year = {2013},
     volume = {58},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2013_58_3_a7/}
}