1. Hydrostatic power splitting transmissions for wheeled vehicles — classification and theory of operation. SAE paper 680549;Kress,1968
2. Leistungsverzweigte Getriebe (Power split transmissions);Jarchow;VDI-Z.,1964
3. Continuously Variable Tractor Transmissions, ASAE Distinguished Lecture Series, Tractor Design No. 29;Renius,2005
4. Characteristics of Multiple Range Hydromechanical Transmissions. SAE Paper 720724;Orshansky,1972
5. Continuously Variable Hydromechanical Transmission for Commercial Vehicle By Simulation Studies. SAE paper 845095;Kirejczyk,1984