Electronic Notes in Theoretical Computer ScienceVolume 142, 3 January 2006, Pages 1-3PrefaceAuthor links open overlay panelMaurice ter Beek, Fabio GadducciShow moreShareCitehttps://doi.org/10.1016/j.entcs.2005.07.009Get rights and contentUnder a Creative Commons licenseopen accessPrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 2005 Elsevier B.V.