Volume 37.1, Issue 73, April 1997, Pages 109-119
H.K. SHOEIB
Volume 36.1, Issue 71, October 1996, Pages 103-116
H.K. SHOEIB; A.N. SAYED; S.A. SOTOHY; S. Kh. ABDEL-GHAFFAR
Volume 29.1, Issue 57, April 1993, Pages 40-49
NABILA GAZIA; H.M. ABDEL-HAFEEZ; H.K. SHOEIB