@article{10_21136_CPMF_1874_123231,
     author = {P\'anek, Augustin},
     title = {D\r{u}kaz vzorce pro zrcadla},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {227--228},
     publisher = {mathdoc},
     volume = {03},
     number = {5},
     year = {1874},
     doi = {10.21136/CPMF.1874.123231},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1874.123231/}
}