Introductory readings:
Andvik, Erik A. 1992. A Pragmatic Analysis of Norwegian Modal Particles. Dallas, Texas: SIL. (130 pages)
Zimmermann, Malte. 2011. Discourse Particles. In Handbücher zur Sprach- und Kommunikationswissenschaft, ed by Paul Portner, Claudia Maienborn und Klaus von Heusinger. Berlin: Mouton de Gruyter, 2012-2038.
Research articles:
Aijmer, Karin. 2015. The Swedish modal particle v?l in a contrastive perspective. Nordic Journal of English Studies 14, 174-200.
Bayer, Josef, and Hans-Georg Obenauer. 2010. Discourse Particles, Clause Structure,and Question Types. The Linguistic Review 28. 449-491.
Cardinaletti, Anna. 2011. German and Italian modal particles and clause structure, The Linguistic Review 28, 493-531.
Coniglio, Marco. 2012. Modal particles, speaker-hearer links, and illocutionary force. In Werner Abrahm and Elisabeth Leiss (eds), Modality and Theory of Mind elements across languages, Berlin, de Gruyter, 253-296.
Egg, Markus. 2012. Discourse particles at the semantics-pragmatics interface. In Werner Abrahm and Elisabeth Leiss (eds), Modality and Theory of Mind elements across languages, Berlin, de Gruyter, 2012, 297-333.
Gyuris, Beáta. 2009. Sentence-types, discourse particles and intonation in Hungarian. In: A. Riester & T. Solstad (eds.). Proceedings of Sinn und Bedeutung (=SuB)13 (SinSpeC 05-I). Stuttgart: University of Stuttgart, 157–170.
Lindner, Katrin 1991. ‘Wir sind ja doch alte Bekannte’ – The use of German ja and doch as modal particles. In: W. Abraham (ed.). Discourse Particles. Amsterdam: Benjamins, 303–328.
Zimmermann, Malte. 2008. Discourse particles in the left periphery. In: B. Shaer et al. (eds.). Dislocated Elements in Discourse: Syntactic, Semantic, and Pragmatic Perspectives. London: Routledge, 200–231.