Authors
Mateusz Lichman
Institute of Mathematics, Łódź University of Technology, Łódź, POLAND
Piotr Nowakowski
piotr.nowakowski@dokt.p.lodz.pl
Institute of Mathematics, Łódź University of Technology, Łódź, POLAND
Institute of Mathematics, Czech Academy of Sciences, Prague, CZECH REPUBLIC
Filip Tcroboś
Institute of Mathematics, Łódź University of Technology, Łódź, POLAND