@article{10_21136_CPMF_1927_122731,
     author = {Petr, Karel},
     title = {Pozn\'amka k numerick\'emu v\'ypo\v{c}tu ur\v{c}it\'ych integr\'al\r{u}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {67--70},
     publisher = {mathdoc},
     volume = {56},
     number = {2},
     year = {1927},
     doi = {10.21136/CPMF.1927.122731},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1927.122731/}
}