1. Sources: Rossetto, M., Introduzione Alla fatica dei Materiali e dei Componenti Meccanici, Levrotto & Bella, Torino, Piedmont, Italy, 2000; NASGRO Reference Manual: Fatigue crack growth computer program "NASGRO" version 3.0, National Aeronautics and Space Administration, Lyndon B. Johnson Space Center, Houston, TX, Doc. No. JSC-22267B, 2000; Bauer, H., Automotive Handbook, Bosch, Stuttgart, Germany, 200; Finzi, A. and Valente, S., Potential applications of new HSS grade for wheels, Proceedings of the Super-High Strength Steels, Associazione Italiana di Metallurgia, Rome, Italy, Paper no 180, 2005; Yan, B., Fatigue behavior of advanced high strength steels for automotive applications, Great Design in Steel Seminar, 2003, http://www.autosteel.org
2. Hucho, W.H. et al., Aerodynamic of Road Vehicles: From Fluid Mechanics to Vehicle Engineering, SAE, Warrendale, PA, 1998.