Volume 7, EIJEST, Vol. 7, 2003, June 2003, Pages 30-42
A Negm; G M Abdelaal; O K Saleh; M F Sauida
Volume 6, EIJEST, Vol. 6, 2002, June 2002, Pages 61-81
A A Alhamid; A Negm; G M Abdelaal; M A Matin