4Variable Compression Ratio.Engine Charles Mendler,Roland Gravel.SAE 2002-01-1940.
5A Study of a Muhiple-link Variable Compression Ratio System for Improving Engine Performance.Ryosuke Hiyoshi ,Shunichi Aoyama, Shinichi Takemura,Kenshi Ushijima and Takanobu Sugiyama.SAE 2006-01-0616.
6Benefits and Challenges of Variable Compression Ratio (VCR).Martyn Roberts.SAE 2003-01-0398.
7Demonstrating the Performance and Emission Characteristics of a Variable Compression Ratio.Alvar-Cycle Engine.01 of Erlandsson, Gunnar Lundholm, Fredrik Soderberg and Bengt Johansson.SAE 982682.
8Variable compression ratio engine: a future power plant for automobiles-an overview.Amjad Shaik,N Shenbaga Vinayaga Moorthi, and R Rudramoorthy.Proc.IMechE Vol.221 Part D: J. Automobile Engineering.