Volume 19, Issue 26, September 2016, Pages 1-8
10.22038/ijogi.2016.7796
Narjes Bahri; Leila Pourali; Habibollah Esmaeeli
Volume 11, Issue 1, April 2008, Pages 9-16
10.22038/ijogi.2008.5935
Azita Azarian; Mahyar Mohammadifard