@article{UM_1999_7_2_a6,
     author = {Chalupn{\'\i}kov\'a, Kate\v{r}ina},
     title = {Z anglick\'ych u\v{c}ebnic},
     journal = {U\v{c}itel matematiky},
     pages = {109},
     year = {1999},
     volume = {7},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1999_7_2_a6/}
}