Volume 10.2, Issue 20, January 1983, Pages 86-91
M.T. SHOUMAN; M. ABO-EL-ATA; M.M. AFIEFY; S. EL-SAWAF; K. ZAKI
Volume 6, Issue 11.12, January 1979, Pages 265-279
M.M. AFEEFY; M.M. ABO-EL-ATA; M.T. SHOUMAN; S. EL-SAWAF; K. ZAKI