@article{UM_2000__8_2_a5,
     author = {Calda, Emil},
     title = {O sestav\'ach s opakov\'an{\'\i}m},
     journal = {U\v{c}itel matematiky},
     pages = {100--103},
     publisher = {mathdoc},
     volume = {08},
     number = {2},
     year = {2000},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_2000__8_2_a5/}
}