@article{10_21136_CPMF_1929_108929,
     author = {Schuster, Jan},
     title = {Projektivn{\'\i} zobecn\v{e}n{\'\i} {Snelliova} \'ukolu},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {101--103},
     year = {1929},
     volume = {58},
     number = {1-2},
     doi = {10.21136/CPMF.1929.108929},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1929.108929/}
}