US5900071-A  "Solid-State Superlattices" by Gottfried H. Doehler, Nov. 1983, pp. 144-151.;  Database Inspec. Institute of Electrical Engineers, Stevenage, GB Inspec No. 4590534, Nov. 30, 1992, Hicks, L.D. and Dresselhaus, M.S., "Effects of Quantum-Well Structures on the Thermoelectric Figure of Merit"-pp. 12727-12731.;  European Patent Search Report dated Dec. 8, 1997.;  G.D. Mahan, et al., "Thermoelectric Devices Using Semiconductor Quantum Wells" American Institute of Physics, pp. 1899-1901, Aug. 1994.;  High Thermoelectric Figures of Merit in PbTe Quantum Wells, Journal of Electronic Materials, T.C. Harman, D.L. Spears and M.J. Manfra, Reprinted from JEM, vol. 25, No. 7, Jul. 1996, pp. 1121-1127.;  Journal of Electronic Materials, vol. 22, No. 9, Aug. 1993, pp. 1165-1172, XP000646076, Harman T.C., "Controlled P-Type Sb Doping in LPE-Grown Hgl-XCDXTE Epilayers.";  Kaoru Inoue, et al., "Electron Mobilities in Modulation-Doped A1xGa1-xAsGaAs and Pseudomorphic A1xGa1-xAsInyGa1-y As Quantum-Well Structures," The American Physical Society, vol. 47, No. 7, pp. 3771-3778, Feb. 1993.;  Katsuya Oda, et al., "Effects of Interface Atomic Configurations on Electronic Structures of Semiconductor Superlattices," Jpn. J. Appln. Phys.vol. 31 Part 1, No. 8, pp. 2359-2368, Aug. 1992.;  L.D. Hicks, et al., "Use of Quantum-well Superlattices to Obtain a High Figure of Merit from Non-conventional Thermoelectric Materials" American Institute of Physics, pp. 3230-3232, Dec. 1993.;  Mark L. Biermann, et al., "Wave-Packet Theory of Coherent Carrier Dynamics in a Semiconductor Superlattice,"The American Physical Society, vol. 47, No. 7, pp. 3718-3717, Feb. 1993.;  Mish, Frederick C., Ed.-in-chief, Webster's Ninth New Collegiate Dictionary, 1985, p. 1271.;  Patent Abstracts of Japan Pub. #63020880 Jan. 28, 1988, "Manufacture of Thermoelement for Electronic Wristwatch.".;  T. E. Whall and E.H.C. Parker, "Preparation of Advanced Materials by Molecular Beam Epitaxy," in Proc. First Europe Conf. on Thermoelectrics, D.M. Rowe, ed. (Peter Peregrinus Ltd., London 1987) Chapter 5, pp. 51-63. No Month Available.