Volume 59, Issue 138, July 2013, Pages 97-102
GHADA A.E. MOHAMED; EMAN M.A. EL-NASER; M.H. RATEB
Volume 57, Issue 129, April 2011, Pages 1-13
M.M. ABD EL-LATIF
Volume 53, Issue 114, July 2007, Pages 1-11
M.H. SHEKIDEF; A.M. AL-AKRAA; M.M. GHANEM