Staffan Boström (2013). "Trafikverket - E4 Sundsvall"(PDF). Sbi.se - The Swedish Institute of Steel Construction (in Swedish). Archived from the original(PDF) on 21 March 2019.
Staffan Boström (2013). "Trafikverket - E4 Sundsvall"(PDF). Sbi.se - The Swedish Institute of Steel Construction (in Swedish). Archived from the original(PDF) on 21 March 2019.