@article{UM_2010__18_1_a5, author = {Ku\v{r}ina, Franti\v{s}ek}, title = {Chv\'ala "biflov\'an{\'\i}"}, journal = {U\v{c}itel matematiky}, pages = {49--52}, publisher = {mathdoc}, volume = {18}, number = {1}, year = {2010}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_2010__18_1_a5/} }