Volume 40, Issue 2, March and April 2021, Pages 445-449
10.30492/ijcce.2020.37708
AI Yong-Ping; Xie Shi-Kun
Volume 37, Issue 6, November and December 2018, Pages 81-87
10.30492/ijcce.2018.36061
Yong-Ping AI; Shi-Kun XIE