Centreless wheel (English Wikipedia)

"Centerless/Hubless Wheels -- Black Hole". The Bicycle Museum Of Bad Ideas. Retrieved 22 April 2025.
"Centerless/Hubless Wheels -- Problems". The Bicycle Museum Of Bad Ideas. Retrieved 22 April 2025.

researchgate.net (Global: 96^th place; English: 89^th place)

Pinto, Sheldon S.N.; Amarnath, Joshua M.; Nair, Jishnu S.; Rajkumar, E. "Design and Analysis of a Hubless Personal Vehicle". ResearchGate. Retrieved 2014-12-13.

studylib.net (Global: low place; English: low place)

"Design and Fabrication of Hubless Bike". studylib. Archived from the original on 2021-08-19. Retrieved 2019-12-13.

ujet.com (Global: low place; English: low place)

"Case Study — Ujet One". www.ujet.com. Retrieved 2022-08-09.

uspto.gov (Global: 2,155^th place; English: 1,380^th place)

ppubs.uspto.gov

Thorp, T. (23 September 1890). "Bicycle". United States Patent Office. Retrieved 22 April 2025.

web.archive.org (Global: 1^st place; English: 1^st place)

Self, Douglas. "Monowheels". The Self Site. Douglas Self. Archived from the original on 28 February 2025. Retrieved 12 May 2025.
"Design and Fabrication of Hubless Bike". studylib. Archived from the original on 2021-08-19. Retrieved 2019-12-13.
Choudhary, Neha (13 January 2014). "En Route to Goa: Having Modified the Royal Enfield 535cc, Bike Enthusiasts from Pink City Are Optimistic about Their Success in the Upcoming India Bike Week". DNA : Daily News & Analysis. Highbeam. Archived from the original on 11 June 2014. Retrieved 21 March 2014 – via HighBeam Research.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Welsh, Jonathan (2011-02-16). "For 'Tron' Fans: Your Very Own Light Cycle". Wall Street Journal. ISSN 0099-9660. Retrieved 2022-08-09.
Louie, Elaine (1991-08-29). "CURRENTS; A Bicycle Far Ahead Of the Pack (On Paper)". The New York Times. ISSN 0362-4331. Retrieved 2022-08-09.

wsj.com (Global: 94^th place; English: 66^th place)

Welsh, Jonathan (2011-02-16). "For 'Tron' Fans: Your Very Own Light Cycle". Wall Street Journal. ISSN 0099-9660. Retrieved 2022-08-09.

Centreless wheel (English Wikipedia)

bicycling.com (Global: low place; English: low place)

books.google.com (Global: 3rd place; English: 3rd place)

collider.com (Global: 158th place; English: 116th place)

core77.com (Global: low place; English: low place)

douglas-self.com (Global: low place; English: low place)

ifdesign.com (Global: low place; English: low place)

indiatimes.com (Global: 31st place; English: 19th place)

timesofindia.indiatimes.com

menafn.com (Global: low place; English: low place)

motorauthority.com (Global: 5,464th place; English: 3,741st place)

nytimes.com (Global: 7th place; English: 7th place)

pardo.net (Global: low place; English: low place)

researchgate.net (Global: 96th place; English: 89th place)

studylib.net (Global: low place; English: low place)

ujet.com (Global: low place; English: low place)

uspto.gov (Global: 2,155th place; English: 1,380th place)

ppubs.uspto.gov

web.archive.org (Global: 1st place; English: 1st place)

worldcat.org (Global: 4th place; English: 4th place)

search.worldcat.org

wsj.com (Global: 94th place; English: 66th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

collider.com (Global: 158^th place; English: 116^th place)

indiatimes.com (Global: 31^st place; English: 19^th place)

motorauthority.com (Global: 5,464^th place; English: 3,741^st place)

nytimes.com (Global: 7^th place; English: 7^th place)

researchgate.net (Global: 96^th place; English: 89^th place)

uspto.gov (Global: 2,155^th place; English: 1,380^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 4^th place; English: 4^th place)

wsj.com (Global: 94^th place; English: 66^th place)