Kumaresan, V., and S. Vairachilai. “Design an Efficient Top-K Query Retrieval Technique for GIQ Problems”. Journal of Advance Research in Computer Science & Engineering (ISSN 2456-3552), vol. 2, no. 5, May 2015, pp. 15-20, https://doi.org/10.53555/nncse.v2i5.446.