@article{himaptravelhierarchicalmultiagentplannin,
  title = {HiMAP-Travel: Hierarchical Multi-Agent Planning for Long-Horizon Constrained Travel},
  author = {The Viet Bui and Wenjun Li and Yong Liu},
  year = {2026},
  eprint = {2603.04750},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.04750},
}