1. Conover, W. J. (1980). Practical Nonparametric Statistics. Wiley. Hoboken. USA.
2. Crolla, D. A., Chen, D. C., Whitehead, J. P. and Alstead, C. J. (1998). Vehicle handling assessment using a combined subjective-objective approach. SAE Paper No. 980226.
3. Dylla, S. and Albers, A. (2006). Development of a method for objective evaluation of gear control quality in manual-shifted vehicles. CTI (Conf.): 5th Int. CTI Symp. Innovative Automotive Transmissions. Berlin. Germany.
4. Harnett, Ph. (2002). Objective Methods for the Assessment of Passenger Car Steering Quality. VDI-Verlag. Duesseldorf. Germany.
5. ISO 4138 (2004). Passenger Cars, Steady-state Circular Driving Behaviour-Open-loop Test Methods. 3rd Edn., Ref. No. ISO 4138:2004(E). International Standardisation Organization. Geneva. Switzerland.