Abeywickrama, Tenindra, Muhammad Aamir Cheema, and Sabine Storandt. “Hierarchical Graph Traversal for Aggregate K Nearest Neighbors Search in Road Networks”. Proceedings of the International Conference on Automated Planning and Scheduling 30, no. 1 (June 1, 2020): 2-10. Accessed September 6, 2024. https://ojs.aaai.org/index.php/ICAPS/article/view/6639.