Hub gear (English Wikipedia)

"Trek Bicycle Case Study". Gates Corporation. Archived from the original on 2013-10-03. Retrieved 2014-02-27. Trek found that the contact points between the belt and the sprocket had worn.

hubgear.net

"Hub gears - chains". Hubgear.net. Archived from the original on 2011-07-23. Retrieved 2010-12-14.
Graham Moult (2007). "Sprockets for hub gears". hubgear.net. Archived from the original on 2011-07-23. Retrieved 2011-09-30. Your chainline can be affected by whether the sprocket is flat or dished - the smaller sprockets are generally flat, the larger ones are tend to be dished, and the mid-sized available in both shapes.

hubstripping.wordpress.com

"The Internal Gear Hub Review". Hubstripping.wordpress.com. Archived from the original on 2011-11-12. Retrieved 2011-11-21. Now you should be able to choose the gear hub group which fits your personal cycling purpose best!

ihpva.eu

"Efficiency Measurements of Bicycle Transmissions" (PDF). 2004. Archived from the original (PDF) on 2012-11-14. Retrieved 2011-07-22.

ihpva.org

"The mechanical efficiency of bicycle derailleur and hub gear transmissions" (PDF). 2001. Archived (PDF) from the original on 2011-07-25. Retrieved 2011-07-22.

montaguebikes.com

Bikes, Montague (May 26, 2011). "Why Use an Internal Gear Hub?".

nuvincicycling.com

"Nfinity N330/N380/N380SE - Products - nuvincicyling.com". www.nuvincicycling.com. Archived from the original on 18 October 2017. Retrieved 26 April 2018.

road.cc

dave_atkinson (5 February 2010). "Shimano announce Alfine 11 speed". road.cc. Archived from the original on 6 July 2011. Retrieved 14 December 2010.

sheldonbrown.com

Sheldon Brown. "Internal-Gear Hubs". Archived from the original on 2011-11-20. Retrieved 2011-11-20.

thedancingchain.com

Berto, Frank J.; Tony Hadland; Ron Shepherd; et al. (2008) [2000]. The Dancing Chain: History and Development of the Derailleur Bicycle (3rd ed.). San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. p. 34. ISBN 978-1-892495-59-4. Archived from the original on June 6, 2017. Retrieved May 30, 2017.

web.archive.org

Sheldon Brown. "Internal-Gear Hubs". Archived from the original on 2011-11-20. Retrieved 2011-11-20.
"The Internal Gear Hub Review". Hubstripping.wordpress.com. Archived from the original on 2011-11-12. Retrieved 2011-11-21. Now you should be able to choose the gear hub group which fits your personal cycling purpose best!
Berto, Frank J.; Tony Hadland; Ron Shepherd; et al. (2008) [2000]. The Dancing Chain: History and Development of the Derailleur Bicycle (3rd ed.). San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. p. 34. ISBN 978-1-892495-59-4. Archived from the original on June 6, 2017. Retrieved May 30, 2017.
Berto, Frank J.; et al. (2016) [2000]. The Dancing Chain: History and Development of the Derailleur Bicycle (5th ed.). San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. ISBN 978-1-892495-77-8. Archived from the original on July 8, 2005. Retrieved May 30, 2017.
"Nfinity N330/N380/N380SE - Products - nuvincicyling.com". www.nuvincicycling.com. Archived from the original on 18 October 2017. Retrieved 26 April 2018.
dave_atkinson (5 February 2010). "Shimano announce Alfine 11 speed". road.cc. Archived from the original on 6 July 2011. Retrieved 14 December 2010.
"Hub gears - chains". Hubgear.net. Archived from the original on 2011-07-23. Retrieved 2010-12-14.
"The mechanical efficiency of bicycle derailleur and hub gear transmissions" (PDF). 2001. Archived (PDF) from the original on 2011-07-25. Retrieved 2011-07-22.
"Efficiency Measurements of Bicycle Transmissions" (PDF). 2004. Archived from the original (PDF) on 2012-11-14. Retrieved 2011-07-22.
Graham Moult (2007). "Sprockets for hub gears". hubgear.net. Archived from the original on 2011-07-23. Retrieved 2011-09-30. Your chainline can be affected by whether the sprocket is flat or dished - the smaller sprockets are generally flat, the larger ones are tend to be dished, and the mid-sized available in both shapes.
"Trek Bicycle Case Study". Gates Corporation. Archived from the original on 2013-10-03. Retrieved 2014-02-27. Trek found that the contact points between the belt and the sprocket had worn.