Volume 49, Issue 97, April 2003, Pages 113-140
Samar S. Tawfik; Hanaa I. Fahim; M.B. Ashour; Y.A. Elhassaneen; Howida S. Abou Seif
Volume 46.2, Issue 92, January 2002, Pages 84-106
H.M. Abd El-Hafeez; Samar S. Tawfik; M.A. Kandeil; A.N. Sayed
Volume 45.2, Issue 90, July 2001, Pages 24-42
H.M. Abdel-Hafeez; S.M. Hegazi; Elham S. Saleh; Samar S. Tawfik
Volume 43.1, Issue 85, April 2000, Pages 51-74
H.M. Abd El-Hafeez; Samar S. Tawfik; Elham S.E. Saleh; Hanaa I. Faheem; S.Kh. Abd El-Ghaffar