1. Dendrites with a closed set of end points;Arévalo;Topology Appl.,2001
2. Monotone mappings of universal dendrites;Charatonik;Topology Appl.,1991
3. Mapping hierarchy for dendrites;Charatonik;Dissertationes Math. (Rozprawy Mat.),1994
4. W.J. Charatonik, E.P. Wright, S.S. Zafiridou, Dendrites with a countable set of end points and universality, Houston J. Math., in press.
5. K. Kuratowski, Topology, vol. I, New York, 1966.