Wilson, Hugo (1995). «The A-Z of Motorcycles». The Encyclopedia of the Motorcycle. Londres: Dorling Kindersley. p. 166. ISBN0-7513-0206-6. «The advanced design included a two-speed gear, all-chain drive, a triangulated frame, telescopic forks, and a kickstarter.»
Duchene, Paul (mayo de 2008). «Bike Buys: Nimbus–The Prince of Denmark». En Duchene, Paul; Lombard, Stefan, eds. Sports Car Market (Portland, OR USA: Sports Car Market) 20 (5): 136. ISSN1527-859X. Consultado el 30 de diciembre de 2012. «Nimbus developed telescopic forks in 1933 and introduced hydraulic damping in 1939.»
Duchene, Paul (mayo de 2008). «Bike Buys: Nimbus–The Prince of Denmark». En Duchene, Paul; Lombard, Stefan, eds. Sports Car Market (Portland, OR USA: Sports Car Market) 20 (5): 136. ISSN1527-859X. Consultado el 30 de diciembre de 2012. «Nimbus developed telescopic forks in 1933 and introduced hydraulic damping in 1939.»