@article{RMF_2018_93_3_a0, author = {Provinsk\'y, Pavel}, title = {Dla\v{z}di\v{c}ky}, journal = {Rozhledy matematicko-fyzik\'aln{\'\i}}, pages = {1--8}, year = {2018}, volume = {93}, number = {3}, language = {cs}, url = {http://geodesic.mathdoc.fr/item/RMF_2018_93_3_a0/} }