Volume 53, Issue 4, October 2020, Pages 81-87
Kh. A. Sife-eldeen
Volume 53, Issue 4, October 2020, Pages 88-92
Kh. A. Sife-eldeen
Volume 53, Issue 4, October 2020, Pages 122-133
Kh. A. Sife-eldeen; Hany Moharam Hosni
Volume 52, Issue 1, January 2019, Pages 70-88
Kh. A. Sife-eldeen