@InProceedings{yoshinaga:etal:TAG+6:2002,
  author    = {Yoshinaga, Naoki and Miyao, Yusuke and Tsujii, Jun'ichi},
  title     = {A Formal Proof of Strong Equivalence for a Grammar Conversion from LTAG to HPSG-style},
  booktitle = {Proceedings of the Sixth International Workshop on Tree Adjoining Grammar and Related Frameworks (TAG+6)},
  month     = {May},
  year      = {2002},
  address   = {Universitá di Venezia},
  pages     = {187--192},
  url       = {http://www.aclweb.org/anthology/W02-2227}
}