It has been about two years [1]. Finally, it will be published, hopefully.
26-Jul-21 Shinta was asked to add email of corresponding author, Prof. Pingkan Aditiawati, as suggested by reviewer of ICCSE 2019.
notes
Zaki Su’ud (chair), “International Conference and Computation in Science and Engineering 2019 (ICCSE 2019)”, 14-15 October 2019, East Hall, Institut Teknologi Bandung, Bandung, Indonesia, url http://iccse2019.fmipa-itb.org/ [20210726].