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2. Private communication, Mica and Micanite (Ireland) LTD., Mallow, Co. Cork, Ireland.
3. HEIMANN Radiation Thermometer KT14 Instruction Manual, HEIMANN Gmbh, Infrared Measurements, D-6200 Wiesbaden-Dotzheim, Germany.
4. A.J. Chapman,Heat Trans fer, New York, McGraw-Hill, 1984.
5. F. Sarvar, N.J. Poole, P.A. Witting,J. Electron. Mater. 19, 1345 (1990).