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2. Plasma exhaust after treatment, SAE SP-1395, in: J. Hoard, H. Servati (Eds.), Society of Automotive Engineers, 1998.
3. Non-thermal plasma exhaust emission control, SAE SP-1483, in: M. Lou Balmer, G. Fisher, J. Hoard (Eds.), Society of Automotive Engineers, 1999.
4. Non-thermal plasma, SAE SP-1395, in: M. L. Balmer, G. Fisher, J. Hoard (Eds.), Society of Automotive Engineers, 1999.
5. M.L. Balmer, R.G. Tonkyn, A.Y. Kim, I.S. Yoon, D. Jimenez, T. Orlando, S. Barlow, J. Hoard, Diesel NOx reduction on surfaces in plasma, SAE 982511, 1998.