Volume 56, Issue 125, April 2010, Pages 1-10
H.A. SHALABY; S.S.S. YOUNIS; M.A.M. ALY
Volume 54, Issue 118, July 2008, Pages 1-12
S.S.S. YOUNIS; S.A. TAWFIK; R.A. EL-RAMADY; H.A. SHALABY