About this article
Published Online: Jun 09, 2008
Page range: 171 - 174
DOI: https://doi.org/10.2478/v10037-007-0020-9
This content is open access.
Freek Wiedijk
Institute for Computing and Information Sciences, Radboud University Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands