Volume 31, Issue 4, December 2012, Pages 85-90
10.30492/ijcce.2012.5924
Mahdi Esmailbeygi; Fariborz Rashidi
Volume 24, Issue 4, December 2005, Pages 15-24
10.30492/ijcce.2005.8104
Mahmoud Bayat; Abbas Taeb; Saeed Rastegar