1. The benefits of aftermarket gasoline additives;Sengars;Fuels International,2001
2. Some properties of carbonaceous deposits accumulated in internal combustion engines;Lauer;Combustion Flame,1960
3. Intake valve deposits;Tupa;Automotive Engineering,1989
4. Intake valve deposits;Cheng;Automotive Engineering,1993
5. Intake valve deposits—impact on emissions;Houser;Automotive Engineering,1993