Authors
Marta Lipnicka
marta.lipnicka@wmii.uni.lodz.pl
University of Lódź, Faculty of Mathematics and Computer Science Banacha 22, Poland
Artur Lipnicki
artur.lipnicki@wmii.uni.lodz.pl
University of Lódź, Faculty of Mathematics and Computer Science Banacha 22, Poland
Andrzej Nowakowski
andrzej.nowakowski@wmii.uni.lodz.pl
University of Lódź, Faculty of Mathematics and Computer Science Banacha 22, Poland