1. Engen H. (2006). “Førsøk med å utvide bruken av fastsandmetoden for å bedre friksjonen på vinterveger.” MS thesis Dept. of Civil and Transportation Engineering NTNU Trondheim Norway.
2. Johansson Ö. (2002). “Accidents speeds and salt consumptions on roads in winter.” Proc. 11th PIARC Int. Winter Road Congress Sapporo Japan.
3. Malmivuo M. (2002). “Winter maintenance and traffic safety.” Proc. 11th PIARC Int. Winter Road Congress Sapporo Japan.
4. Maze T. H. Agarwal M. and Burchett G. (2006). “Whether weather matters to traffic demand traffic safety and traffic flow.” Transportation Research Record. No. 1448 Transportation Research Board Washington D.C.
5. Möller S. (2006). “Tema Vintermodell-Väglagsmodellen.” VTI Rep. No . 529 VTI Linkøping Sweden.