1. 1 ISO 4210- 96 (1996 ) Cycles - safety requirements for bicycles.
2. 2 UNI 10518- 96 (1996 ) Mountain-bike - Requisiti di sicurezza (in Italian).
3. 3 Anon. (1994 ). NORBA, US bicycle use and hazard patterns. Report 4/11/94,Colorado Spring.
4. Review of fatigue strength assessment of nonwelded and welded structures based on local parameters
5. 5 E. Haibach (1968 ) Die Schwingfestigkeit Von Shweisverbindungen Aus der Sicht Einer Oertlichen Beanspruchungsmessung. Report no. FB-77, LBF,Darmastadt, Germany.