Kwang Mook Choi, Yeoun Kyoung Hwang and Chang Seek Lee
Journal of Engineering and Applied Sciences 13 ( 3 SI ): 3238 - 3242 , 2018
Yeoun Kyoung Hwang, Jin Hyung Lee and Chang Seek Lee
Journal of Engineering and Applied Sciences 13 ( 12 SI ): 9474 - 9479 , 2018