Joon-Koo Choi, Gha-Jung Kim, Dong-Hee Hong, Hyeong-Gyun Kim and Dong-Kyoon Han
Journal of Engineering and Applied Sciences 13 ( 2 SI ): 2957 - 2962 , 2018
Hyeong-Gyun Kim
Journal of Engineering and Applied Sciences 13 ( 2 SI ): 3001 - 3006 , 2018