@article{10_21136_CPMF_1903_122555,
     author = {P\'anek, Augustin},
     title = {Stanoven{\'\i} {Heronova} vzorce pro plosk\'y obsah troj\'uheln{\'\i}ka},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {342--345},
     year = {1903},
     volume = {32},
     number = {4},
     doi = {10.21136/CPMF.1903.122555},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1903.122555/}
}