@article{PMFA_2018__63_1_a3, author = {Brandts, Jan and K\v{r}{\'\i}\v{z}ek, Michal}, title = {Pozoruhodn\'e vlastnosti du\'aln{\'\i}ch a rovnost\v{e}nn\'ych \v{c}ty\v{r}st\v{e}n\r{u}}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {41--50}, publisher = {mathdoc}, volume = {63}, number = {1}, year = {2018}, zbl = {06994487}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_2018__63_1_a3/} }