@article{10_21136_CPMF_1931_123932,
     author = {Zahradn{\'\i}\v{c}ek, Josef},
     title = {Z praktika fysik\'aln{\'\i}ch pokus\r{u}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {49--D54},
     year = {1931},
     volume = {60},
     number = {4},
     doi = {10.21136/CPMF.1931.123932},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1931.123932/}
}