Volume 19, Issue 1, June 2000, Pages 19-23
10.30492/ijcce.2000.10202
Ahmad Emad; Kazem Karami
Volume 18, Issue 1, June 1999, Pages 12-18
10.30492/ijcce.1999.10467
Ali Akbar Khandar; Masoumeh Khatamian