Pitak Keawbunsong, Pitchaya Supannakoon and Sathaporn Promwong
Journal of Engineering and Applied Sciences 12 ( 9 ): 2532 - 2536 , 2017
Pitak Keawbunsong, Pitchaya Supannakoon and Sathaporn Promwong
Journal of Engineering and Applied Sciences 12 ( 1 SI ): 5690 - 5694 , 2017