Volume 27, Issue 2, June 2002, Pages 1-13
Kasem Salah Abd El-Wahab El-Alfy; M. F. Sobeih; A. F. Khattab; M. B. Saad; Y. M. Shawky
Volume 24, Issue 2, June 1999, Pages 47-57
A. El-Nashar; Fatma E. Z. Abou-Chadi; M. Saad