Volume 23.2, Issue 46, July 1990, Pages 151-160
Th.S. ABD EL ALL; A.A. AMER; A.H. EL-SEBAIE; M.N. ISMAIL; M. MOUBARAK
Volume 11.2, Issue 22, January 1984, Pages 155-160
A.H. EL-SEBAIE; A.A. AMER
Volume 11.2, Issue 22, January 1984, Pages 161-167
A.H. EL-SEBAIE; H.A. IBRAHIM; A.A. IBRAHIM; W. HOFMANN; A.A. AMER