Fladvad, Marit https://orcid.org/0000-0001-8388-3037
Ulvik, Arnhild
Funding for this research was provided by:
Statens vegvesen
Norges Forskningsråd (256541)
Article History
Received: 10 March 2019
Accepted: 29 November 2019
First Online: 14 December 2019