Modeling, analysis, and optimal design of the automotive transmission ball capsule system. - Xingyong Song; Mohd Azrin Mohd Zulkefli; Zongxuan Sun; Hsu-Chiang Miao (ACC, 2009)

Automotive transmission clutch fill optimal control: An experimental investigation. - Xingyong Song; Mohd Azrin Mohd Zulkefli; Zongxuan Sun (ACC, 2010)

Fast Numerical Powertrain Optimization Strategy for Connected Hybrid Electric Vehicles. - Mohd Azrin Mohd Zulkefli; Zongxuan Sun (IEEE Trans. Veh. Technol., 2019)