Volume 52, Issue 109, April 2006, Pages 113-143
M.A. MOUSTAFA; U.A. SHARF EL DIN; S.A. SABER; A.S. SULTAN
Volume 33.2, Issue 66, July 1995, Pages 91-101
A.F. BASTAWROWS; M.M. ABDEL-HAFFEEZ; H.A. ABDEL-KADER; R.S. SEDDEK