Norwegian National Rail Administration (2007). "Jernbanestatistikk 2007"(PDF). Archived(PDF) from the original on 24 July 2011. Retrieved 2 December 2011.
Norwegian National Rail Administration (15 August 2005). "Dette er bygd på Sandvika-Asker" (in Norwegian). Archived from the original on 16 September 2009. Retrieved 24 January 2011.
Norwegian National Rail Administration (27 June 2008). "Spørsmål og svar" (in Norwegian). Archived from the original on 29 August 2012. Retrieved 24 January 2011.
Nordli, Olav (29 August 2005). "Sandvika-Asker åpnet" (in Norwegian). Norwegian National Rail Administration. Archived from the original on 25 March 2012. Retrieved 2 December 2011.
Nordli, Olav (16 April 2008). "Suksess med strukturlyddemping" (in Norwegian). Norwegian National Rail Administration. Archived from the original on 18 September 2012. Retrieved 9 September 2011.
Norwegian National Rail Administration (2007). "Jernbanestatistikk 2007"(PDF). Archived(PDF) from the original on 24 July 2011. Retrieved 2 December 2011.
Norwegian National Rail Administration (15 August 2005). "Dette er bygd på Sandvika-Asker" (in Norwegian). Archived from the original on 16 September 2009. Retrieved 24 January 2011.
Norwegian National Rail Administration (27 June 2008). "Spørsmål og svar" (in Norwegian). Archived from the original on 29 August 2012. Retrieved 24 January 2011.
Nordli, Olav (29 August 2005). "Sandvika-Asker åpnet" (in Norwegian). Norwegian National Rail Administration. Archived from the original on 25 March 2012. Retrieved 2 December 2011.
Nordli, Olav (16 April 2008). "Suksess med strukturlyddemping" (in Norwegian). Norwegian National Rail Administration. Archived from the original on 18 September 2012. Retrieved 9 September 2011.