@article{10_21136_CPMF_1935_108837,
     author = {Charfreitag, Vratislav},
     title = {Pozn\'amky k pokus\r{u}m v u\v{c}ebnici {Pet{\'\i}rov\v{e}-\v{S}mokov\v{e}.} {[I.]}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {D71},
     publisher = {mathdoc},
     volume = {64},
     number = {4},
     year = {1935},
     doi = {10.21136/CPMF.1935.108837},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1935.108837/}
}