@article{chan-etal-2021-controllable,
    title = "Controllable Summarization with Constrained {M}arkov Decision Process",
    author = "Chan, Hou Pong  and
      Wang, Lu  and
      King, Irwin",
    editor = "Roark, Brian  and
      Nenkova, Ani",
    journal = "Transactions of the Association for Computational Linguistics",
    volume = "9",
    year = "2021",
    address = "Cambridge, MA",
    publisher = "MIT Press",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/2021.tacl-1.72/",
    doi = "10.1162/tacl_a_00423",
    pages = "1213--1232"
}