@article{UM_2000__8_2_a6,
     author = {Calda, Emil},
     title = {Sou\v{c}et mocnin prvn{\'\i}ch $n$ p\v{r}irozen\'ych \v{c}{\'\i}sel aneb {Hra} \v{c}{\'\i}sel m\'amiv\'a},
     journal = {U\v{c}itel matematiky},
     pages = {104--108},
     publisher = {mathdoc},
     volume = {08},
     number = {2},
     year = {2000},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_2000__8_2_a6/}
}