@article{PMFA_1990__35_2_a5,
     author = {Kraus, Ivo},
     title = {Jak\'e jm\'eno m\'a m{\'\i}t reflexn{\'\i} podm{\'\i}nka? {(Ke} 100. v\'yro\v{c}{\'\i} narozen{\'\i} {Williama} {Lawrence} {Bragga)}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {86--90},
     publisher = {mathdoc},
     volume = {35},
     number = {2},
     year = {1990},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1990__35_2_a5/}
}