@InProceedings{berglund-bjorklund-drewes:2017:TAG+13,
  author    = {Berglund, Martin  and  Bj\"{o}rklund, Henrik  and  Drewes, Frank},
  title     = {Single-Rooted DAGs in Regular DAG Languages: Parikh Image and Path Languages},
  booktitle = {Proceedings of the 13th International Workshop on Tree Adjoining Grammars and Related Formalisms},
  month     = {September},
  year      = {2017},
  address   = {Ume\r{a}, Sweden},
  publisher = {Association for Computational Linguistics},
  pages     = {94--101},
  url       = {http://www.aclweb.org/anthology/W17-6210}
}