Originally posted to http://www.tempoklubben.com/Norskprodusert/Andre%20motorsykler%20og%20scootere/andre_motorsykler_og_scootere.htm
Archives are available:
1. https://archive.ph/VyiFJ#selection-1787.0-3449.136
2. https://web.archive.org/web/20160306145123/http://www.tempoklubben.com/Norskprodusert/Andre%20motorsykler%20og%20scootere/andre_motorsykler_og_scootere.htm
The work appears well researched and documented. One article has a publication date of November 2002.
Author
Dagfinn Johnsen
Address: Lunheim 7057 Jonsvatnet.
dagjoh at phys.ntnu dot no