1. Output Split Electrically-Variable Transmission With Electric Propulsion Using One or Two Motors,2011
2. Sasaki, S., 1998, “Toyota's Newly Developed Hybrid Powertrain,” 10th International Symposium on Power Semiconductor Devices and ICs, IEEE, pp. 17–22.
3. Two-Mode, Input-Split, Parallel, Hybrid Transmission,1996
4. Two-Mode, Split Power, Electro-Mechanical Transmission,1996
5. Electrically Variable Transmission With Selective Input Split, Compound Split, Neutral and Reverse Modes,2003