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2. W. Hampson, British Patent No. 10156.
3. H. Glaser, VDI Zeitschrift, Beihefte Verfahrenstechnik, (4): 112 (1938).
4. E. R. G. Eckert, Heat and Mass Transfer, McGraw-Hill, New York (1963), p. 162.
5. E. D. Grimison, Trans. ASME, 59: 583 (1937).