Volume 15, EIJEST, Vol. 15, 2012, June 2012, Pages 101-111
S Abdelsalam; G Attia; T Seleem; M Elkady
Volume 15, EIJEST, Vol. 15, 2012, June 2012, Pages 211-222
G Attia; E Elshamy; H Fawzy; K Abdul - hafez