Muhammad Ery Wijaya และ Bundit Limmeechokchai. (2009) Optimization of Indonesian Geothermal Energy Resources for Future Clean Electricity Supply: A Case of Java-Madura-Bali System. <i>International Journal of Renewable Energy</i>, <i>Vol. 4</i>(No.2), 13-24.Muhammad Ery Wijaya และ Bundit Limmeechokchai. "Optimization of Indonesian Geothermal Energy Resources for Future Clean Electricity Supply: A Case of Java-Madura-Bali System". International Journal of Renewable Energy Vol. 4 (2009):13-24.Muhammad Ery Wijaya และ Bundit Limmeechokchai. Optimization of Indonesian Geothermal Energy Resources for Future Clean Electricity Supply: A Case of Java-Madura-Bali System. School of Renewable Energy Technology:ม.ป.ท. 2009.