Hoffmann (motorcycle) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hoffmann (motorcycle)" in English language version.

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Wilson, Hugo (1995). "The A-Z of Motorcycles". The Encyclopedia of the Motorcycle. London: Dorling Kindersley. p. 84. ISBN 0-7513-0206-6.
Wilson, Hugo (1995). "The Directory of Motorcycles". The Encyclopedia of the Motorcycle. London: Dorling Kindersley. p. 241. ISBN 0-7513-0206-6.

berniesbikeshed.wordpress.com

"Hoffmann History and sales brochures 1949-54". Bernies Bike Shed. Retrieved 2012-02-22.

books.google.com

Quellin, Adam (2007). "Isetta". Microcars at Large!. MBI Publishing. p. 11. ISBN 978-1-84584-092-1. Retrieved 2012-02-20.

doi.org

dx.doi.org

"Zeichnungsblatt Nr. 3", Briefwechsel über die Anlage eines städtischen Leitungsnetzes für Licht- und Kraftstrom, Berlin, Boston: De Gruyter, pp. 66–66, 1922-12-31, retrieved 2022-04-28

eon-ruhrgas.com

kontext.eon-ruhrgas.com

Hahn, Mika. "Das vergessene Ende der Hoffmann-Werke 1954" [The forgotten end of the Hoffmann factory 1954] (PDF) (in German). Archived (PDF) from the original on 2006-11-12. Retrieved 2012-02-21.

motohistory.net

Kruger, Ralf (2009-07-22). "The German autumn of 1953: A new triumvirate for the mid-size motorcycle?". Ed Youngblood's MotoHistory – News and Views – July 2009 News. Ed Youngblood. 8th article down the page. Archived from the original on 2009-11-11. Retrieved 2012-02-21. With experience only in building the Italian Vespa under license, when it came to fabricating its own newly-designed boxer twin in a new factory opened in 1952, Hoffmann learned that its team lacked adequate experience, especially in maintaining the required manufacturing tolerances.

philseed.com

Seed, Phil. "Hoffmann". Phil Seed's Virtual Car Museum. Archived from the original on 2011-05-27. Retrieved 2012-02-20. BMW (who did have a licence to make Isettas) successfully sued Hoffmann, who had to cease production after just over 100 vehicles had been sold.

spiegel.de

"Vespas Glück und Ende" [Vespas luck and end]. Der Spiegel (in German). Hamburg, Germany. 1 January 1955. pp. 9–10. Retrieved 2012-02-21.

web.archive.org

Hahn, Mika. "Das vergessene Ende der Hoffmann-Werke 1954" [The forgotten end of the Hoffmann factory 1954] (PDF) (in German). Archived (PDF) from the original on 2006-11-12. Retrieved 2012-02-21.
Kruger, Ralf (2009-07-22). "The German autumn of 1953: A new triumvirate for the mid-size motorcycle?". Ed Youngblood's MotoHistory – News and Views – July 2009 News. Ed Youngblood. 8th article down the page. Archived from the original on 2009-11-11. Retrieved 2012-02-21. With experience only in building the Italian Vespa under license, when it came to fabricating its own newly-designed boxer twin in a new factory opened in 1952, Hoffmann learned that its team lacked adequate experience, especially in maintaining the required manufacturing tolerances.
Seed, Phil. "Hoffmann". Phil Seed's Virtual Car Museum. Archived from the original on 2011-05-27. Retrieved 2012-02-20. BMW (who did have a licence to make Isettas) successfully sued Hoffmann, who had to cease production after just over 100 vehicles had been sold.