@article{PMFA_1956_1_3_a6,
     author = {Kub{\'\i}k, Stanislav},
     title = {Ultrazvuk a jeho technick\'e vyu\v{z}it{\'\i}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {258--269},
     year = {1956},
     volume = {1},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1956_1_3_a6/}
}