1. 1) N. C. Nicolau: Proc. 1st Int. Conf. on Thermoelectric Energy Conversion (ICTEC), Arlington, (1976), p. 59;
2. Proc. 2nd ICTEC, (1978), p. 82;
3. Proc. 3rd ICTEC, (1980), p. 82;
4. Proc. 4th ICTEC, (1982), p. 83;
5. Proc. 5th ICTEC, (1984), p. 161.