Turtsevich, A.S., Rubtsevich, I.I., Solov’yovY.А., Vas’kov, O.S., Kononenko, V.K., Niss, V.S. and Kerentsev, A.F. 2012. The investigation of quality of power-transistor crystals soldering by a transient impedance-spectrometer. Technology and design in electronic equipment. 5 (Oct. 2012), 44-47.