Volume 25, No . 50, October 2009, Pages 3-8
F. Amiri; S. Yaghmaei; S. Samie
Volume 24, No . 41, March 2008, Pages 53-58
V. Maghsodi; S. Yaghmaee
Volume 20, Issue 28, October 2004, Pages 61-64
V. Maghsoodi; S. Yaghmaei; K. Ghorat