1. Aleixo, P., Pardo, T.A.: CSTTool: um parser multidocumento automático para o português do brasil. In: Proceedings of the IV Workshop on M.Sc. Dissertation and Ph.D. Thesis in Artificial Intelligence - WTDIA, pp. 140–145 (2008)
2. Bick, E.: The Parsing System Palavras. Automatic Grammatical Analysis of Portuguese in a Constraint Grammar Framework. University of Arhus, Århus (2000)
3. Branco, A., et al.: The Portuguese Language in the Digital Age/A Língua Portuguesa na Era Digital. Springer, Heidelberg (2012). https://doi.org/10.1007/978-3-642-29593-5
4. Briz, S.P.B., Portolés, J.: Diccionario de partículas discursivas del español (2003). http://www.dpde.es
5. Cettolo, M., Girardi, C., Federico, M.: WIT3: web inventory of transcribed and translated talks. In: Proceedings of the 16th Conference of the European Association for Machine Translation (EAMT), vol. 261, p. 268 (2012)