1. W. H. McAdams, Heat Transmission, 3rd ed., McGraw-Hill Book Company, New York (1954).
2. W.M. Kays and A.L. London, Compact Heat Exchangers, National Press (1955).
3. A. J. Gram, C.O. Mackey, and E.S. Monroe, “Convection Heat Transfer and Pressure Drop of Air Flowing Across In-Line Tube Banks.” ASME Paper 56-A-127.
4. G. P. Sutton, Rocket Propulsion Elements, John Wiley and Sons, Inc., New York (1958).
5. H. Itō, “Friction Factors for Turbulent Flow in Curved Pipes,” ASME Paper 58–8A-14.