@article{10_21136_CPMF_1909_123818,
     author = {Najman, J.},
     title = {Lom sv\v{e}tla v \v{c}o\v{c}k\'ach a centrick\'ych syst\'emech. {[IV.]}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {618--622},
     year = {1909},
     volume = {38},
     number = {5},
     doi = {10.21136/CPMF.1909.123818},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1909.123818/}
}