@inproceedings{DBLP:conf/soda/ChistikovKMSW17,
  title = "On Rationality of Nonnegative Matrix Factorization",
  author = "Dmitry Chistikov and Stefan Kiefer and Ines Maru\v{s}i\'{c} and Mahsa Shirmohammadi and James Worrell",
  year = "2017",
  booktitle = "Proceedings of the 28th Annual {ACM-SIAM} Symposium on Discrete Algorithms {(SODA)}",
  pages = "1290--1305",
  url = "http://dx.doi.org/10.1137/1.9781611974782.84",
  doi = "10.1137/1.9781611974782.84",
}
@techreport{16CKMSW-NMFIrrational16,
  title = "Nonnegative Matrix Factorization Requires Irrationality",
  author = "Dmitry Chistikov and Stefan Kiefer and Ines Maru\v{s}i\'{c} and Mahsa Shirmohammadi and James Worrell",
  year = "2016",
  institution = "arxiv.org",
  note = "To appear in SIAM Journal on Applied Algebra and Geometry; available at \verb|http://arxiv.org/abs/1605.06848|",
}
@inproceedings{16CKMSW-ICALP,
  title = "On Restricted Nonnegative Matrix Factorization",
  author = "Dmitry Chistikov and Stefan Kiefer and Ines Maru\v{s}i\'{c} and Mahsa Shirmohammadi and James Worrell",
  year = "2016",
  booktitle = "Proceedings of the 43rd International Colloquium on Automata, Languages and Programming ({ICALP})",
  url = "http://drops.dagstuhl.de/opus/volltexte/2016/6238/pdf/LIPIcs-ICALP-2016-103.pdf",
}
@article{JMLR:v16:marusic15a,
  title = "Complexity of Equivalence and Learning for Multiplicity Tree Automata",
  author = "Ines Maru\v{s}i\'{c} and James Worrell",
  year = "2015",
  journal = "Journal of Machine Learning Research",
  pages = "2465-2500",
  url = "http://jmlr.org/papers/v16/marusic15a.html",
  volume = "16",
}
@inproceedings{DBLP:conf/fossacs/KieferMW15,
  title = "Minimisation of Multiplicity Tree Automata",
  author = "Stefan Kiefer and Ines Maru\v{s}i\'{c} and James Worrell",
  year = "2015",
  booktitle = "Proceedings of the 18th International Conference on Foundations of Software Science and Computation Structures {(FoSSaCS)}",
  pages = "297--311",
  url = "http://dx.doi.org/10.1007/978-3-662-46678-0_19",
  doi = "10.1007/978-3-662-46678-0_19",
}
@inproceedings{DBLP:conf/mfcs/MarusicW14,
  title = "Complexity of Equivalence and Learning for Multiplicity Tree Automata",
  author = "Ines Maru\v{s}i\'{c} and James Worrell",
  year = "2014",
  booktitle = "Proceedings of the 39th International Symposium on Mathematical Foundations of Computer Science {(MFCS)}",
  pages = "414--425",
  url = "http://dx.doi.org/10.1007/978-3-662-44522-8_35",
  doi = "10.1007/978-3-662-44522-8_35",
}