Mathematical Problems in Engineering
Volume 2007 (2007), Article ID 10432, 3 pages
Dynamics and Control in Sciences and Engineering
Department of Statistics, Applied Mathematics and Computation, State University of São Paulo at Rio Claro, P.O. Box 178, Rio Claro 13500-230, SP, Brazil
Received 19 August 2007; Accepted 19 August 2007
Copyright © 2007 J. M. Balthazar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article has no abstract.