@InProceedings{morrill:valentin:TAG+10:2010,
  author    = {Morrill, Glyn and Valent\'{\i}n, Oriol},
  title     = {On Calculus of Displacement},
  booktitle = {Proceedings of the 10th International Workshop on Tree Adjoining Grammar and Related Frameworks (TAG+10)},
  month     = {June},
  year      = {2010},
  address   = {Yale University},
  pages     = {45--52},
  url       = {http://www.aclweb.org/anthology/W10-4406}
}