1. Experiment and Research on ECH of Gears by the researching group headed by Chen Chi-Pin, Journal of Talian Engineering Institute March. 1980
2. Advanced Theory in Gear Meshing by Liu Jian, A text book for post graduates in Talian Engineering Institute
3. A New Approach by Electrochemical Finishing of Hardened Cylindrical Gear Tooth by G. Capello S. Bertoglio G.P. Micheletti, Annals of the CIRP Vol. 28/1/1979