1. Daniels, J. (2002). Sensational systems. European Automotive Design, March 2002.
2. Daniels, J. (2003). Hidden wires. European Automotive Design, April 2003.
3. Dohle, U. (2003). 75 Years Diesel Injection Made by Bosch. Motortech. Z. 64, Stuttgart.
4. Duckworth, R. F., & Barker, L. (1996). A comparative study of variable camshaft phasing and port throttling for performance and emissions. SAE-Paper 960580, Variable Valve Actuation and Power Boost, SAE Spec. Publ., SP-1171.
5. Egger, K., Warga, J., & Klügl, W. (2002). New common rail injection system with piezo actuation for diesel passenger cars. MTZ worldwide Edition No.: 2002–09.