@article{10_21136_CPMF_1877_121690,
     author = {Strnad, A.},
     title = {O troj- a \v{c}tyr\'uheln{\'\i}c{\'\i}ch},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {269--273},
     publisher = {mathdoc},
     volume = {06},
     number = {5},
     year = {1877},
     doi = {10.21136/CPMF.1877.121690},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1877.121690/}
}