Pneumatic-Combustion Hybrid Engine: A Study of the Effect of the Valvetrain Sophistication on Pneumatic ModesP. Brejaud, A. Charlet, Y. Chamaillard, A. Ivanco et P. HigelinOil Gas Sci. Technol. – Rev. IFP, 65 1 (2010) 27-37DOI: https://doi.org/10.2516/ogst/2009054