Volume 61, Issue 1, January 2010, Pages 92-96
A. Thabit; A. E. Abdel-Aal; S. El Salamouny; M. A.K. El-Sheikh; S. Elnagar
Volume 51, Issue 4, October 2000, Pages 501-510
Sh. Abd-Rabou; N. Hussein; G. H. Sewify; S. Elnagar