Volume 5, Issue 1, January 2011, Pages 67-84
E. Pirani; L. Secondi
Volume 4, Issue 3, July 2010, Pages 373-378
M. Vargas-Vargas; M. Meseguer-SantamarÃa; J. Mondéjar - Jiménez; J.A. Mondéjar - Jiménez