@article{MASLO_2000__50_4_a2,
     author = {Porubsk\'y, \v{S}tefan},
     title = {Covering systems, {Kubert} identities and difference equations},
     journal = {Mathematica slovaca},
     pages = {381--413},
     publisher = {mathdoc},
     volume = {50},
     number = {4},
     year = {2000},
     mrnumber = {1857297},
     zbl = {0991.11005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_2000__50_4_a2/}
}