Hårstad, Stian (2020-04-28). "The Concept of Halvemål in Norwegian Linguistics – a Historiographical Account". European Journal of Scandinavian Studies. 50 (1): 83–110. doi:10.1515/ejss-2020-0005. ISSN2191-9402.
Hårstad, Stian (2020-04-28). "The Concept of Halvemål in Norwegian Linguistics – a Historiographical Account". European Journal of Scandinavian Studies. 50 (1): 83–110. doi:10.1515/ejss-2020-0005. ISSN2191-9402.