@article{UM_2011__19_2_a3, author = {Hrub\'y, Dag}, title = {P\v{r}{\'\i}mka v {Gaussov\v{e}} rovin\v{e} (1)}, journal = {U\v{c}itel matematiky}, pages = {81--88}, publisher = {mathdoc}, volume = {19}, number = {2}, year = {2011}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_2011__19_2_a3/} }