Volume 38, Issue 2, July 2015, Pages 37-48
10.22055/ppr.2015.11228
Roya Farhadi; Hossein Allahyari; Hsin Chi
Volume 26, Issue 2, March 2004, Pages 51-62
10.22055/ppr.2004.12765
H. Ghahari; B. Tenhumberg