Volume 55, Issue 122, July 2009, Pages 1-12
A.N. SAYED; M.N.M. ABD EL-ATI
Volume 55, Issue 122, July 2009, Pages 1-17
M.N.M. ABD EL-ATI
Volume 54, Issue 119, October 2008, Pages 1-12
M.N.M. ABD EL-ATI; A.N. SAYED