1 National Research and Innovation Agency of Indonesia (BRIN), Gedung 90 , Kawasan Puspiptek Serpong, South Tangerang, 15340, Indonesia. yogi.sugiawan@gmail.com.
2 Ministry of Energy and Mineral Resources, Jalan Pegangsaan Timur No. 1a, Jakarta, 10320, Indonesia. kurniawan.tohoku@gmail.com.