@inbook{403691, title = {Rie\v senie \'uloh}, booktitle = {Stavba Loba\v cevsk\'eho planimetrie}, series = {GDML\_Books}, publisher = {Mlad\'a fronta}, address = {Praha}, year = {1969}, pages = {78-109}, language = {sk}, url = {http://dml.mathdoc.fr/item/403691} }
(éd.). Riešenie úloh, dans Stavba Lobačevského planimetrie, GDML_Books, (1969), pp. 78-109. http://gdmltest.u-ga.fr/item/403691/