1. Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire LE11 3TU, UK
2. Department of Mechanical Engineering, University of Engineering and Technology, Lahore 54890, Pakistan
3. Capricorn Automotive Ltd., Basingstoke RG24 8LJ, UK
4. Castrol Ltd., BP Technology Centre, Whitchurch Hill, Oxfordshire RG8 7QR, UK