Volume 21.2, Issue 42, May 1989, Pages 172-176
Y. KHAMIS; A.A. KAMEL; A.S. SOLIMAN; M.F. MAHFOUZ; M. EL-S. EASA
Volume 10.1, Issue 19, June 1982, Pages 75-80
A. HEGAZY; Y. KHAMIS; L. FAHMY; M. OMAR
Volume 10.1, Issue 19, June 1982, Pages 177-180
Y. KHAMIS; A. HASSANEIN