M, V. C., S. Tionardi, and E. Dewayani. “Geographic Information Retrieval Using Query Aware Document Ranking Method Case Study for Surakarta”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 2-3, May 2018, pp. 105-11, https://jtec.utem.edu.my/jtec/article/view/4201.