@InProceedings{becker:TAG+1:1990,
  author    = {Becker, Tilman},
  title     = {Metarules in Tree Adjoining Grammars},
  booktitle = {Proceedings of the First International Workshop on Tree Adjoining Grammar and Related Frameworks (TAG+1)},
  month     = {August},
  year      = {1990},
  address   = {Schloß Dagstuhl},
  pages     = {8},
  url       = {http://www.aclweb.org/anthology/W90-0203}
}