Volume 64, Issue 156, January 2018, Pages 81-88
OMAR, A.A.; BAKER, N.M.; BKHEET, A.A.; KHDER, A.M.; NASR, M.Y.
Volume 63, Issue 155, October 2017, Pages 24-35
SABER, A.S.; HANAA, ELHOFY; SALWA, HENDAWY