Volume 17.1, Issue 33, May 1986, Pages 44-51
A.H. FARID; H.A. TORKY; M.M. EL-NIMR; M.A. AKEULA; M. EZZAT
Volume 14.1, Issue 27, January 1985, Pages 79-86
H.A. TORKY; M. EYZZAT; M. AKEULO
Volume 9, Issue 17.18, January 1982, Pages 77-82
H.A. TORKY; M.M. EL-SHEINNAWI