Volume 16, Issue 49.50, May 2013, Pages 16-22
10.22038/ijogi.2013.842
Fahimeh Sehhati Shafaie; Samiyeh Kazemi; Morteza Ghujazadeh
Volume 15, Issue 41, March 2013, Pages 17-25
10.22038/ijogi.2013.556
Fahimeh Sehati Shafaei; Samieh Kazemi; Morteza Ghojazadeh