Slamet, Santosa, Tadahiro Matsumoto, Tohru Naoi, and Munehiro Goto. “Sector-Labeling for the Hilbert Curve Construction and Its Application to Mapped Data Retrieval Algorithms”. Science & Technology Asia 7, no. 3 (November 4, 2015): 49–57. Accessed April 30, 2024. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41793.