Cheung, Ka Luen
Wong, Sen
Funding for this research was provided by:
Education University of Hong Kong (Dean’s Research Funds (IRS7 2018 04305 and 04171) of the Faculty of Liberal Arts and Social Sciences of the Education University of Hong Kong, the Small Scale Grant 2019/20 of the Department of Mathematics and Information Technology)
Article History
Received: 8 March 2020
Revised: 26 September 2020
Accepted: 6 October 2020
First Online: 17 October 2020