Re-uploaded.

This issue was published on 31st August 2019 on our previous sites.

One of the articles was retracted per Author's request due to undisclosed reasons.

-----------------------------------------------------------------------------------------------------------

Pengunggahan Ulang.

Nomor ini telah diterbitkan pada 31 Agustus 2019 pada situs kami sebelumnya.

Salah satu artikel ditarik berdasarkan permintaan Author dikarenakan suatu dan lain hal.

Published: Aug 31, 2019