@article{UM_1992_0_1_a7,
     author = {Calda, Emil},
     title = {Z \v{c}innosti odborn\'e skupiny pro u\v{c}itelsk\'e studium matematiky},
     journal = {U\v{c}itel matematiky},
     pages = {15},
     year = {1992},
     volume = {0},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1992_0_1_a7/}
}