1. J. D. Keller, J. Appl. Mech. ASME
16:77 (1949).
2. A. P. Fraas and M. N. Ozisik, Heat Exchanger Design, John Wiley & Sons, Inc., New York (1965), p. 98.
3. M. T. Cichelli and D. F. Boucher, Chem. Eng. Progr.
52(5) :213 (1956).
4. J. S. McDonald and K. Y. Eng, Chem. Eng. Progr. Symp. Series, A.I.Ch.E., 41:11 (1963).
5. R. B. Scott, Cryogenic Engineering, D. Van Nostrand Company, Princeton, N.J. (1959), p. 19.