Volume 26, Issue 3, September 2007, Pages 73-80
10.30492/ijcce.2007.7633
Mohammad Nader Lotfollahi; Hamid Modarress; Behzad Khodakarami
Volume 11, Issue 2, December 1992, Pages 25-28
10.30492/ijcce.1992.10957
Mohamad Taghi Zafarani Moattar; Abdorreza Mirhoseni