Discrete MathematicsVolume 307, Issues 11–12, 28 May 2007, Pages 1221-1222PrefaceAuthor links open overlay panelRafał Kalinowski, Mariusz Meszka (Guest Editors)Show moreShareCitehttps://doi.org/10.1016/j.disc.2006.09.040Get rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 2006 Published by Elsevier B.V.