%0 Journal Article %A Porubský, Štefan %T Covering systems, Kubert identities and difference equations %J Mathematica slovaca %D 2000 %P 381-413 %V 50 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_2000__50_4_a2/ %G en %F MASLO_2000__50_4_a2