Yusup, Yusri
Liu, Heping
Funding for this research was provided by:
National Science Foundation (1112938)
Universiti Sains Malaysia (1001/PTEKIND/811316, 304.PTEKIND.6316289)
Article History
Received: 3 April 2019
Accepted: 26 December 2019
First Online: 13 January 2020