Volume 18, Issue 3, January and February 2008, Pages 53-66
M. Darvishi; E. Kamrani; M. Taherizadeh
Volume 15, Issue 3, November and December 2007, Pages 23-34
Gh. Akbarzadeh; M. Taheri zadeh; K. Ejlali; A. Hashemian; F. Seraji