@article{10_21136_CPM_1959_108531,
     author = {Pond\v{e}l{\'\i}\v{c}ek, Bed\v{r}ich},
     title = {O jist\'e pologrup\v{e} endomorfism\r{u} na jednodu\v{s}e uspo\v{r}\'adan\'e mno\v{z}in\v{e}. {I}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {177--182},
     publisher = {mathdoc},
     volume = {084},
     number = {2},
     year = {1959},
     doi = {10.21136/CPM.1959.108531},
     mrnumber = {0104747},
     zbl = {0085.25303},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1959.108531/}
}