Volume 17, Issue 2, September 2009, Pages 309-319
Walaa A El-Shalakany; M.O El-Zakaziky; A.M. El-Araby; E.A. El-Sahhar; Y.E Arafa
Volume 17, Issue 2, September 2009, Pages 351-359
Walaa El-Shalakany; M A Shatlah; M H Atteia; Faten, B. EL-Kasas; Soher, S. Mostafa; G.A . Abd EL-Malak