@article{10_21136_CPMF_1934_122155,
     author = {Hacar, Bohumil},
     title = {Z astronomie dvojhv\v{e}zd {I}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {48--R52},
     year = {1934},
     volume = {63},
     number = {3},
     doi = {10.21136/CPMF.1934.122155},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1934.122155/}
}