Volume 6, Issue 1, January and February 2021, Pages 151-154
A. A. Abouamer; G. S. Abdel Motaleb; K.A. Eid; H.I. Abdelnaiem; A.M. Diab
Volume 5, Issue 2 part (2), February 2020, Pages 229-232
S.D. Mohamed; K.A. Eid; H.M. Kamal
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