1. Hoard, J. and Rehagen, L., SAE paper 97-0035.
2. Young, M. B., SAE paper 81-0020.
3. Ozdor, N., Dulger, M., and Sher, E., SAE paper 94-0987.
4. Sztenderowicz, M. and Heywood, J.B., SAE paper 90-2143.
5. Matthews, R. D., Sarwar, M. G., Hall, M. J., Filipe, D. J., Miller, D. L., and Cernanashy, N. P., SAE paper 91-2345.