Volume 34.2, Issue 68, January 1996, Pages 85-94
M. ABD EL-NASSER; A.A. SHAABAN; SEHAM, M. ALY; MANAL M. SAYED
Volume 32.2, Issue 64, January 1995, Pages 88-95
SEHAM, M. ALY; M.A. MOHAMMED
Volume 23.2, Issue 46, July 1990, Pages 102-105
SEHAM, M. ALY; MAHMOUD, A.z.