[1] Ministry of Energy and Mineral Resources (2015). Strategic plan of the ministry of energy and mineral resources 2015-2019. Retrieved July 06, 2019 from http://www.apbi-icma.org//uploads/files/old/2016/01/Renstra-KESDM-2015-2019.pdf
[2] Ministry of Energy and Mineral Resources. (2016). Handbook of energy and economic statistics of Indonesia 2016. Retrieved July 06, 2019 from https://www.esdm.go.id/assets/media/content/content-handbook-of-energy-economic-statistics-of-indonesia-2016-lvekpnc.pdf
[3] Ahmad, H. (2017). Impact of slashing oil prices on the natural gas market. In S. K. Kar., & A. Gupta (Eds.), Natural gas markets in India (pp. 33-42). Springer, Singapore.
[4] Paliwal, P. (2017). Natural gas pricing. In S. K. Kar., & A. Gupta (Eds.), Natural gas markets in india: opportunities and challenges (pp. 75-93). Springer, Singapore.
[5] Kar, S. K., Sinha, P. K., & Dholakia, B. (2017). Building and sustaining natural gas business in India. In S. K. Kar., & A. Gupta (Eds.), Natural gas markets in India: opportunities and challenges (pp.167-196). Singapore: Springer Nature Singapore.
[6] Shanker, R., & Bhattacharya, M. (2017). Brain tumor segmentation of normal and pathological tissues using K-mean clustering with fuzzy C-mean clustering. In J. M. R. S. Tavares., & R. M. N. Jorge (Eds.), European congress on computational methods in applied sciences and engineering (pp. 286-296). Springer, Cham.
[7] Jodas, D. S., Pereira, A. S., & Tavares, J. M. R. (2017). Automatic segmentation of the lumen in magnetic resonance images of the carotid artery. In J. M. R. S. Tavares., & R. M. N. Jorge (Eds.), European congress on computational methods in applied sciences and engineering (pp. 92-101). Springer, Cham.
[8] Herrera, W. G., Cover, G. S., & Rittner, L. (2017). Pixel-based classification method for corpus callosum segmentation on diffusion-MRI. In J. M. R. S. Tavares., & R. M. N. Jorge (Eds.), European congress on computational methods in applied sciences and engineering (pp. 217-224). Springer, Cham.
[9] Li, C., Sun, L., Jia, J., Cai, Y., & Wang, X. (2016). Risk assessment of water pollution sources based on an integrated k-means clustering and set pair analysis method in the region of Shiyan, China. Science of the total environment, 557, 307-316.
[10]Tartavulea, R. I. (2015). Model for determining the optimum location for performance improvement in supply-chain strategies. European journal of interdisciplinary studies, 7(1), 39.
[11]Liu, D., Hou, M., & Qu, H. (2013). A simple model for the multiple traveling salesmen problem with single depot and multiple sink. COMPEL-The international journal for computation and mathematics in electrical and electronic engineering, 32(2), 556-574.
[12]Lam, C. H., Choy, K. L., Ho, G. T., & Lee, C. K. M. (2014). An order-picking operations system for managing the batching activities in a warehouse. International journal of systems science, 45(6), 1283-1295.
[13]Jeřábek, K., Majercak, P., Kliestik, T., & Valaskova, K. (2016). Application of clark and wright´ s savings algorithm model to solve routing problem in supply logistics [Special issue]. NAŠE MORE: znanstveno-stručni časopis za more i pomorstvo, 63(3), 115-119.
[14]Sathyanarayanan, S., Joseph, K. S., & Jayakumar, S. K. V. (2015). A hybrid population seeding technique based genetic algorithm for stochastic multiple depot vehicle routing problem. 2015 international conference on computing and communications technologies (ICCCT) (pp. 119-127). IEEE.
[15]Pichpibul, T., & Kawtummachai, R. (2013). A heuristic approach based on clarke-wright algorithm for open vehicle routing problem. The scientific world journal. http://dx.doi.org/10.1155/2013/874349
[16]Hashi, E. K., Hasan, M. R., & Zaman, M. S. U. (2015, November). A heuristic solution of the Vehicle Routing Problem to optimize the office bus routing and scheduling using Clarke & Wright's savings algorithm. 2015 international conference on computer and information engineering (ICCIE) (pp. 13-16). IEEE.
[17]Charoenwong, C., & Pathomsiri, S. (2015, May). Vehicle routing for improving financial performance: A case study of a freight transportation service provider in Thailand. 4th international conference on advanced logistics and transport (ICALT) (pp. 263-268). IEEE.
[18]Young, J. R., Suon, S., Rast, L., Nampanya, S., Windsor, P. A., & Bush, R. D. (2016). Benefit‐cost analysis of foot and mouth disease control in large ruminants in cambodia. Transboundary and emerging diseases, 63(5), 508-522.
[19]Hausken, K. (2016). Cost benefit analysis of war. International journal of conflict management, 27(4), 454-469.
[20]Rushton, A., Croucher, P., & Baker, P. (2014). The handbook of logistics and distribution management: Understanding the supply chain. Kogan Page Publishers.
[21]Meindl, S. C. P. (2016). Supply chain management--strategy, planning and operation. Tsinghua University Press. wheat soybean others land for no use.
[22]Panagakos, G., Psaraftis, H. N., & Holte, E. A. (2015). Green corridors and their possible impact on the European supply chain. In C.-Y. Lee., & Q. Meng (Eds). Handbook of ocean container transport logistics (pp. 521-550). Springer, Cham.
[23]Amani, H., Kariminezhad, H., & Kazemzadeh, H. (2016). Development of natural gas flow rate in pipeline networks based on unsteady state Weymouth equation. Journal of natural gas science and engineering, 33, 427-437.
[24]Aggarwal, C. C. (2015). Data mining: the textbook. Springer.
[25]Badiru, A. B. (2005). Cluster analysis: a tool for industrial engineers. In Handbook of industrial and systems engineering (pp. 393-402). CRC Press.
[26]Andritsos, P., & Tsaparas, P. (2017). Categorical data clustering. In C. Sammut., & G. I. Webb (Eds.), Encyclopedia of machine learning and data mining (pp. 188-193). Springer, Boston, MA
[27]Zafar, M. H., & Ilyas, M. (2015). A clustering based study of classification algorithms. International journal of database theory and application, 8(1), 11-22.
[28]Jin, X., & Han, J. (2017). K-Means clustering. In C. Sammut., G. I. Webb (Eds.), Encyclopedia of machine learning and data mining (pp. 695-697). Springer, Boston, MA.
[29]Diaby, M., & Karwan, M. H. (2016). Advances in combinatorial optimization. Singapore: World Scientific Publishing, 2016.
[30]Bramel, J., & Simchi-Levi, D. (1997). The logic of logistics: theory, algorithms, and applications for logistics management (pp. 175-240). New York: Springer.
[31]Nahmias, S., & Cheng, Y. (2005). Production and operations analysis (Vol. 6). New York: McGraw-hill.