@book{403589, title = {Kru\v znice}, series = {GDML\_Books}, publisher = {Mlad\'a fronta}, address = {Praha}, year = {1966}, language = {cs}, url = {http://dml.mathdoc.fr/item/403589} }
Horák, Stanislav. Kružnice. GDML_Books (1966), http://gdmltest.u-ga.fr/item/403589/