@article{10_21136_CPMF_1940_121000,
     author = {P{\'\i}rko, Zden\v{e}k},
     title = {\'Upatnice a pseudo\'upatnice. {II}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {5--D8},
     year = {1940},
     volume = {69},
     number = {Suppl.},
     doi = {10.21136/CPMF.1940.121000},
     zbl = {0022.26003},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1940.121000/}
}