1. Bies, A., Ferguson, M., Katz, K., & MacIntyre, R. (1995). Bracketing guidelines for Treebank II style. Penn Treebank Project. CIS Technical Report MS-CIS-95-06.
2. Bosch, S., Choi, K.-S., Villemonte De La Clergerie, E., Fang, A. C., Faass, G., Lee, K., et al. (2012). tiger2 as a standardized serialisation for ISO 24615—SynAF. In I. Hendrickx, S. Kübler, & K. Simov (Eds.), TLT11—11th international workshop on Treebanks and Linguistic Theories, Nov 2012, Lisbon, Portugal. Ediçoes Colibri, pp. 37–60.
3. Burnard, L., & Bauman, S. (2008). TEI P5: Guidelines for electronic text encoding and interchange. Manual. http://www.tei-c.org/Guidelines/P5/
4. Dipper, S. (2005). XML-based stand-off representation and exploitation of multi-level linguistic annotation. In Proceedings of Berliner XML Tage 2005 (BXML 2005), Berlin, Germany, pp. 39–50.
5. Hajič, J., Panevová, J., Hajičová, E., Panevová, J., Sgall, P., Pajas, P., et al. (2006). Prague dependency Treebank 2.0. Philadelphia: Linguistic Data Consortium.