Volume 24, Issue 2, September 2011, Pages 107-115
10.22092/ijsr.2010.126613
A. H. Ziaeyan; Payman Keshavarz
Volume 19, Issue 1, May 2005, Pages 113-121
10.22092/ijsr.2005.127427
P. Keshavarz; M.J. Malakouti