@article{10_21136_CPMF_1907_123106,
     author = {\v{C}upr, Karel},
     title = {Sou\v{c}ty n\v{e}kter\'ych \v{r}ad. {[I.]}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {407--408},
     year = {1907},
     volume = {36},
     number = {4},
     doi = {10.21136/CPMF.1907.123106},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1907.123106/}
}