Volume 17, Issue 2, December 1998, Pages 89-93
10.30492/ijcce.1998.10304
Mohammad Hossein Keshavarz; Ali Boushehri
Volume 10, Issue 1, June 1991, Pages 4-15
10.30492/ijcce.1991.10935
Gholam Abbas Parsafar; Y. Ghayeb