Volume 14, Issue 7, January 2012, Pages 15-23
10.22038/ijogi.2012.6005
Hadi Ranjbar; Mehri Kohan; Abbas Abbaszadeh; Mansour Arab
Volume 13, Issue 3, October 2010, Pages 37-46
10.22038/ijogi.2010.5855
Zhila Soltanahmadi; Abbas Abbaszadeh; Batool Tirgari