@article{10_21136_CPMF_1921_109185,
     author = {Kl{\'\i}ma, Josef},
     title = {Sestrojen{\'\i} rovnoos\'e hyperboly ze dvou imagin\'arn\'ych bod\r{u} a dvou imagin\'arn\'ych te\v{c}en},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {115--120},
     year = {1921},
     volume = {50},
     number = {2-3},
     doi = {10.21136/CPMF.1921.109185},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1921.109185/}
}