(1) T. Caillat, A. Borshchevsky and J.-P. Fleurial: Proceedings of the Eleventh International Conference on Thermoelectrics, edited by K. R. Rao, University of Texas Press, Arlington, TX,(1993).
(2) G. A. Slack: CRC Handbook of Thermoelectrics, edited by D. M. Rowe, CRC, Boca Raton, FL,(1995), 407.