Volume 59, Issue 137, April 2013, Pages 51-56
M.F. HUSSIEN; MANAL M. AMIN; O.A. SADEK; A.M. KORIEM
Volume 56, Issue 127, October 2010, Pages 1-12
A.A. AMER; A.S. AIAD; M.A. ABD-ALLAH
Volume 32.1, Issue 63, October 1994, Pages 103-110
A.A. ABOU EL ELA