We find all continuous iterative roots of nth order of a Sperner homeomorphism of the plane onto itself.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ap79-2-4, author = {Zbigniew Le\'sniak}, title = {On fractional iterates of a homeomorphism of the plane}, journal = {Annales Polonici Mathematici}, volume = {79}, year = {2002}, pages = {129-137}, zbl = {1064.39025}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap79-2-4} }
Zbigniew Leśniak. On fractional iterates of a homeomorphism of the plane. Annales Polonici Mathematici, Tome 79 (2002) pp. 129-137. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap79-2-4/