LovellB.Four valve heads. Car Design and Technology, March 1992, 70–73.
2.
RobsonG., Cosworth—The Search for Power, 1991 (Patrick Stephens Ltd.).
3.
AoiK.NomuraK.MatsuzakaH.Optimization of multi-valve, four cycle engine design—the benefit of five-valve technology. SAE paper 860032, 1986.
4.
OhrnbergerG.MannM.The Audi 5-valve cylinder head concept. SAE paper 945004, 1994.
5.
SykesR.Development of a five valve per cylinder variant of the Ford Duratech 2.5 litre V6 engine. Transactions of IMechE Conference Autotech 95, paper C498/22/174.
6.
FukuiT.SatohI.NishiyamaR.Realization of high-performance motorcycle engine 8-valve system racing engine. J. SAE Japan, 1985, 39(9).
7.
KanazawaS.AkagiM.FukumachiM.SuzukiM.Development of elliptical piston engine for motorcycle. SAE paper 930224, 1993.