Effect of doping in n-ZrNiSn intermetallic semiconductor with Bi donor impurity on thermoelectric power factor Z* - V. A. Romaka; Yu. V. Stadnyk; P. Rogl; V. V. Romaka; E. K. Hlil; O. I. Lakh; A. M. Horyn (Journal of thermoelectricity, 2012)