1. Dr. M. Kamel Salaani Tire Rolling Resistance Test Development, Standard Reference Test tire.
2. D. Manes, V. Pata (2009) Wear Of Tire Treads, Journal of Achievement in Materials and Manufacturing Engineering.
3. Pascale Pierre (2003) Characterisation and Evaluation of Tire-Roadway Interface Stress.
4. Mohamed Imran Ghazli (2012) Study of Flexible Polyurethane Foam, International Journal of Applied Physics and mathematics.
5. D. Randall, S. Lee, The Polyurethanes Book, John Wiley, Italy, (2010).