- on 13 May 2012.
Retrieved 2 May 2012. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. p. 96. "Signingsferden" (in Norwegian)...
- IN NEW
KNOWLEDGE BRIEF". T, Tom (25
September 2020). "De nye
Solaris trolleybussene er
kommet til Bergen".
Bussmagasinet (in
Norwegian Bokmål). Retrieved...
- Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. p. 38. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget...
- over
operation through the
company Drammen Kommunale Trikk. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. p. 41. v t e v t e...
-
Drammen og
Omegn Busslinjer, and was sold to
Nettbuss in 1999. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. p. 41. v t e v t e...
- UK: Trolleybooks. ISBN 0-904235-18-1. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. p. 96.
Bergen Light Rail.
Vision for public...
- Oslo: Baneforlaget. ISBN 82-91448-03-5. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. ISBN 82-91448-16-7. Bjerke, Thor & Holom...
- network, the Oslo
Tramway still exists. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. p. 66. Aspenberg, op. cit., p. 70 Aspenberg...
-
system will open in the city in 2021. Aspenberg, Nils Carl (1996).
Trolleybussene i Norge. Oslo: Baneforlaget. "Archived copy".
Archived from the original...
- has
media related to Vålerengalinjen. Aspenberg, Nils Carl (1996).
Trolleybussene i
Norge (in Norwegian). Oslo: Baneforlaget. ISBN 82-91448-03-5. Fristad...
