1. Blackburn, P., Bos, J.: Representation and inference for natural language. In: A First Course in Computational Semantics, vol II. http://www.coli.uni-sb.de/∼bos/comsem/book1.html (1999)
2. Bray, T., Paoli, J., Sperberg, C.M., Mahler, E., Yergeau, F. (eds.): Extensible Markup Language (XML) 1.0, 3rd edn. http://www.w3.org/TR/REC-xml/ . Retrieved 7 July 2006 (2004)
3. Brien D. (Ed.): Dictionary of British Sign Language/English. Faber and Faber, London, Boston (1992)
4. Carpenter, B., Penn, G.: The Attribute Logic Engine. User’s Guide. Version 3.2 Beta, Bell Labs (1999)
5. Elliott, R., Glauert, J.R.W., Jennings, V.J., Kennaway, J.R.: An overview of the SiGML notation and SiGMLSigning software system. In: Streiter, O., Vettori, C. (eds.) Workshop on Representing and Processing of Sign Languages, LREC 2004, Lisbon, pp 98–104 (2004)