1. Song, Q. and Zhu, G., Proc. Soc. Automot. Eng. 2002 World Congress, 2002, paper no. 2002-01-0287.
2. Schar, C. and Onder Geering, H.C., IEEE Trans. Control Syst. Technol., 2006, vol. 14, p. 641.
3. Tronconi, E., Lietti, L., Forzatti, P., and Malloggi, S., Chem. Eng. Sci., 1996, vol. 51, p. 2965.
4. Reimer, L.B. and Murphy, P.G., Int. Patent WO2012065109, 2012.
5. Frivik, B., US Patent 20130167622, 2010.