1. BP Statistical Review of World Energy (2016).
http://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy.html
2. Geological Agency of the Republic of Indonesia: Executive summary: pemutakhiran data dan neraca sumberdaya energy status 2015. Ministry of Energy and Mineral Resources, Republic of Indonesia (2015).
http://psdg.bgl.esdm.go.id/Neraca/2015/Executive%20Summary%20Neraca%20Energi%202015.pdf
3. Koesoemadinata, R.P.: Outline of tertiary coal basin of Indonesia. Ber. Sedimentol. 15, 1–27 (2001)
4. Mezher, T., Chedid, R., Zahabi, W.: Energy resources allocation using multi-objective goal programming: the case of Lebanon. Appl. Energy 61, 175–192 (1998). doi:
10.1016/S0306-2619(98)00043-9
5. Seebregts, A.J., Goldstein, G.A., Smekens, K.: Energy/environmental modeling with the MARKAL family of models. In: Operation Research Proceedings, pp. 75–82 (2001). doi:
10.1007/978-3-642-50282-8_10