1. U.S. Paralympics. http://www.teamusa.org/us-paralympics/sports
2. Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on male physiological parameters in hand cycling. J Rehabil Res Dev. 2015;52(2):211–20.
3. Union Cycliste Internationale—Paracycling. https://www.uci.org/discipline/para-cycling/24eju96onGN1Fo94jnlhZK?discipline=PAR
4. UCI Cycling Regulations. Part XVI: Para-Cycling. https://www.uci.org/regulations/3MyLDDrwJCJJ0BGGOFzOat
5. International Paralympic Committee Paracycling Classification. https://www.paralympic.org/news/sport-week-classification-cycling