Volume 53, Issue 1, January 2002, Pages 73-92
I. A.M. Tolba; A. E. M. Abou Zeid; H. Tawfik; H. S. Yaecoub
Volume 52, Issue 4, October 2001, Pages 607-624
A. E.M. Abo Zeed; I. A.M. Tolba; D. M.A. Fahmy
Volume 52, Issue 3, July 2001, Pages 427-444
I. A.M. Tolba; F. A. Ahmed