Volume 26, Issue 4, December 2007, Pages 123-127
10.30492/ijcce.2007.7617
Alireza Abbasi; Alireza Badiei
Volume 13, Issue 2, December 1994, Pages 97-103
10.30492/ijcce.1994.10923
Ali Asghar Ensafi; Javad Tajebakhsh-e-Ardakany