1. Appendix: Glossary—Wiktionary, the free dictionary;. https://en.wiktionary.org/w/index.php?title=Appendix:Glossary&oldid=51610328.
2. Brody S, Diakopoulos N. Cooooooooooooooollllllllllllll!!!!!!!!!!!!!! Using Word Lengthening to Detect Sentiment in Microblogs. In: Proceedings of the Conference on Empirical Methods in Natural Language Processing. EMNLP’11. USA: Association for Computational Linguistics; 2011. p. 562–570.
3. Eisenstein J. What to do about bad language on the internet. In: Proceedings of the 2013 conference of the North American Chapter of the association for computational linguistics: Human language technologies; 2013. p. 359–369.
4. Do you smile with your nose? Stylistic variation in Twitter emoticons;T Schnoebelen;University of Pennsylvania Working Papers in Linguistics,2012