@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",
}