1. Bishop, I.N., Simko, A., A New Concept of Stratified Charge Combustion – The Ford Combustion Process (FCP), SAE Transactions, Paper 680041, Vol.77, pp. 93–117, 1968.
2. Mitchell, E., Cobb, J.M., Frost, R.A., Design and Evaluation of a Stratified Charge Multi-fuel Military Engine, SAE Transactions, Paper 680042, Vol.77, pp.118–128, 1968.
3. Alperstein, M., Schafer, G.H., Villforth, F.J., Texaco’s Stratified Charge Engine – Multi-fuel, Efficient, Clean, and Practical, SAE Paper 740563, 1974.
4. Urlaub, A.G., Chmela, F.G., High-Speed, Multi-fuel Engine: L9204 FMV, SAE Paper 740122, 1974.
5. Scussel, A.J., Simko, A.O., Wade, W.R., The Ford PROCO Engine Update, SAE Transactions, Paper 780699, Vol. 87, pp. 2706–2725, 1978.