@inproceedings{aghzal-etal-2026-llm,
    title = "Why Do {LLM}-based Web Agents Fail? A Hierarchical Planning Perspective",
    author = "Aghzal, Mohamed  and
      Stein, Gregory J.  and
      Yao, Ziyu",
    editor = "Liakata, Maria  and
      Moreira, Viviane P.  and
      Zhang, Jiajun  and
      Jurgens, David",
    booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics (Volume 1: Long Papers)",
    month = jul,
    year = "2026",
    address = "San Diego, California, United States",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl/2026.acl-long.1483/",
    pages = "32157--32180",
    ISBN = "979-8-89176-390-6"
}