Volume 11.1, Issue 21, June 1983, Pages 192-197
M. SHOKRY; M.F. MAHFOUZ
Volume 10.2, Issue 20, January 1983, Pages 158-160
M. SHOKRY; M. EL KEIEY
Volume 4.2, Issue 8, May 1977, Pages 183-190
M. L. AMIN; M. SHOKRY; S. ABD EL-KARIM.