@article{nederhof-satta-2011-splittability,
    title = "Splittability of Bilexical Context-Free Grammars is Undecidable",
    author = "Nederhof, Mark-Jan  and
      Satta, Giorgio",
    journal = "Computational Linguistics",
    volume = "37",
    number = "4",
    month = dec,
    year = "2011",
    address = "Cambridge, MA",
    publisher = "MIT Press",
    url = "https://aclanthology.org/J11-4009/",
    doi = "10.1162/COLI_a_00079",
    pages = "867--879"
}