1. Oslo Corpus of Tagged Norwegian Texts, bokmål and nynorsk – the bokmål corpus . The Text Laboratory. Department of Linguistics and Scandinavian Studies, University of Oslo . http://www.hf.uio.no/iln/tjenester/kunnskap/sprak/korpus/skriftsprakskorpus/oslo/index.html
2. The Oslo Multilingual Corpus ( 1999–2008 ). The Faculty of Humanities, University of Oslo . https://www.hf.uio.no/ilos/english/services/knowledge-resources/omc/
3. Pragmatic Markers in Translation: A Methodological Perspective;Aijmer,2006