@article{10_21136_CPMF_1918_124005,
     author = {Z\'avi\v{s}ka, Franti\v{s}ek},
     title = {O \'etheru. {[I.]}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {32--42},
     year = {1918},
     volume = {47},
     number = {1},
     doi = {10.21136/CPMF.1918.124005},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1918.124005/}
}