Optimization of the Number of Contact Springs in a Connector by means of Analytical and Numerical Analysis
M. Blauth, F. Berger, J. Song, in: F. Berger, Verband der Elektrotechnik, Elektronik, Informationstechnik (Eds.), Proceedings / ICEC 2014 , VDE-Verlag, Berlin, 2014, pp. 496–501.

Numerical Simulation and experimental verification for Contact Spot Temperature and Electrical Contact Resistance of Rivet contacts
W. Ren, H. Zhi, S. Xue, G. Zhai, J. Song, in: F. Berger, Verband der Elektrotechnik, Elektronik, Informationstechnik (Eds.), Proceedings / ICEC 2014 , VDE-Verlag, Berlin, 2014, pp. 158–162.