Volume 10, Issue 2, September 2008, Pages 27-38
10.22038/ijogi.2007.5945
Fatemeh Ghaffari; Tayebe Poor Ghaznain; Abasali Shamsalinia
Volume 9, Issue 1, March 2006, Pages 52-60
10.22038/ijogi.2006.5991
Fatemeh GAfari; T Porgaznien