Volume 19.2, Issue 38, January 1988, Pages 46-54
M.B. MORCOS; A.H. ELYAS; E.E.A. SAFWAT; A.A. AMER
Volume 14.2, Issue 28, May 1985, Pages 43-50
E.E.A. SAFWAT; M.T. SHOUMAN; L.A.M. EISSA; N.A. WASSAF; H.M. EI-SAWAH