Satthong, Sutamas
Saego, Kritsana
Kitrungloadjanaporn, Pongpatai
Nuttavut, Narin https://orcid.org/0000-0002-1945-1456
Amornsamankul, Somkid
Triampo, Wannapong
Funding for this research was provided by:
Centre of Excellence in Mathematics
Article History
Received: 6 February 2019
Accepted: 22 April 2019
First Online: 3 May 2019
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
: All authors read and approved the manuscript.