@conference {rbewa_eacl91,
	title = {A Language for the Statement of Binary Relations over Feature Structures},
	booktitle = {Proceedings of the Fifth Conference of the European Chapter of the Association for Computational Linguistics},
	year = {1991},
	pages = {287{\textendash}292},
	author = {Graham Russell and Afzal Ballim and Dominique Estival and Susan Warwick-Armstrong}
}
