Download Article
Download the full article as a PDF file.
Download the full article as a PDF file.
© 2006 V. Revajová, M. Levkut, A. Aldawek, R. Herich, E. Dvorožňáková, I. Krupicer, published by Slovak Academy of Sciences, Mathematical Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.