@article{UM_1993_1_1_a20,
     author = {P\r{u}lp\'an, Z.},
     title = {Letn{\'\i} \v{s}kola modern{\'\i} algebry},
     journal = {U\v{c}itel matematiky},
     pages = {46--47},
     year = {1993},
     volume = {1},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1993_1_1_a20/}
}