Volume 19, Issue 4, April 2016, Pages 17-27
10.22038/ijogi.2016.6900
Tahereh Zahedifard; Mahboubeh Firozi
Volume 13, Issue 4, September 2010, Pages 15-20
10.22038/ijogi.2010.5831
Fatemeh Homaee; Tahereh Zahedifard; Mitra Modarres Gilani; Fatemeh Tavasoli; Fatemeh Varshoee Tabrizi