Volume 33.1, Issue 65, April 1995, Pages 193-200
N.H. SALEH; S.M. ZAABEL; S.A. ATALLA; A.S. SHALABY
Volume 31.1, Issue 61, April 1994, Pages 320-326
A.S. SHALABY; S.M. SHARAWY; N.H. SALEH; E.A. HASSAN
Volume 31.1, Issue 61, April 1994, Pages 327-333
A.S. SHALABY; S.M. SHARAWY; N.H. SALEH; E.A. HASSAN