Volume 18, Issue 154, July 2015, Pages 1-7
10.22038/ijogi.2015.4717
Malihe Afiat; Alireza Sanaei
Volume 15, Issue 7, April 2012, Pages 1-8
10.22038/ijogi.2012.5714
Nayereh Ghomian; Sakineh Amouian; Fariba Zemorshidi