Open Access
ARTICLE
J. A. Ferreira1, P. de Oliveira2, P. M. da Silva3
CMUC-Department of Mathematics, University of Coimbra. E-mail: ferreira@mat.uc.pt.
CMUC-Department of Mathematics, University of Coimbra. E-mail: poliveir@mat.uc.pt.
Department of Physics and Mathematics, Coimbra Institute of Engineering. E-mail: pascals@mail.isec.pt. This work was partially supported by Project: PTDC/MAT/74548/2006.
Computer Modeling in Engineering & Sciences 2011, 76(3&4), 163-174. https://doi.org/10.3970/cmes.2011.076.163