1. Lead telluride as a thermoelectric material for thermoelectric power generation
2. Semiconducting Lead Chalcogenides;Ravich,1970
3. Thermoelectricity: Science and Engineering;Heikes,1961
4. Direct Energy Conversion;Sutton,1966
5. R.W. Fritts, Proceedings of Thermoelectric Symposium, Whirlpool Corporation, Michigan, USA, 1959, p. 147.