New interpolation method for quadrature encoder signals. - Kok Kiong Tan; Huixing X. Zhou; Tong Heng Lee (IEEE Trans. Instrum. Meas., 2002)

Development of a Spherical Air Bearing Positioning System. - Kok Kiong Tan; Sunan Huang 001; Wenyu Liang; Abdullah Al Mamun 002; Eng-Kiat Koh; Huixing X. Zhou (IEEE Trans. Ind. Electron., 2012)