Néstor E. Aguilera, Valeria A. Leoni, Graciela L. Nasini. Some flexibility problmes and their complexity. In Johann Hurink, Walter Kern, Gerhard F. Post, Georg Still, editors, Sixth Cologne Twente Workshop on Graphs and Combinatorial Optimization, University of Twente, Enschede, The Netherlands, 29-31 May, 2007. pages 5-8, University of Twente, 2007.
Abstract is missing.