Volume 21, Issue 2, 2020, Pages 115-119
10.22099/ijvr.2019.33237.4944
E. I. Nnamonu; B. O. Mgbenka; E. C. Mbegbu
Volume 7, Issue 4, 2006, Pages 33-39
10.22099/ijvr.2006.2632
M. Taherianfard; Z. Khazaee