@article{Jarczyk:2009,
author
=
"W.Jarczyk and T.Powierża",
title
=
"On the smallest set-valued iterative roots of bijections",
journal
=
"International Journal of Bifurcation and Chaos in Applied Sciences and Engineering",
volume
=
"Vol. 13",
number
=
"no 7",
pages
=
"1889--1893",
year
=
"2003",
}