@book{403490, title = {O rovnic\'\i ch s parametry}, series = {GDML\_Books}, publisher = {Mlad\'a fronta}, address = {Praha}, year = {1964}, language = {cs}, url = {http://dml.mathdoc.fr/item/403490} }
Váňa, Jiří. O rovnicích s parametry. GDML_Books (1964), http://gdmltest.u-ga.fr/item/403490/