Volume 28, Issue 114, September and October 2011, Pages 848-853
Khalilolah Nazem; Fathola Hor; Arash Rashidi
Volume 29, Issue 141, May and June 2011, Pages 672-678
Abolghasem Zarezadeh; Saeid Khosrawi; Khalilollah Nazem; Shila Haghighat