@article{coltreesefficienthierarchicalobjectsearc,
  title = {COL-Trees: Efficient Hierarchical Object Search in Road Networks},
  author = {Tenindra Abeywickrama and Muhammad Aamir Cheema and Sabine Storandt},
  year = {2026},
  eprint = {2601.22183},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2601.22183},
}