Volume 60, Issue 141, April 2014, Pages 180-187
AMMAR ALLUGAMI; MOHAMAD ZUHER AL-AHMAD; NASOUH KHAZNADAR
Volume 52, Issue 111, October 2006, Pages 214-225
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Volume 37.2, Issue 74, July 1997, Pages 62-77
M.M. ANWAR; G.A. MEGAHED
Volume 32.1, Issue 63, October 1994, Pages 191-196
N.H. SALEH; S.A. ATALLAH; O.A. ABD-ALLA; S.M. SHARAWY