1. Patterson, G. K., Zakin, J. L., and Rodri ez, J. M., “Drag Reduction,” I.E.C. Fundamentals (in press).
2. Hershey, H. C. and Zakin, J. L., “Existence of Two Types of Drag Reduction in Pipe Flow of Dilute Polymer Solutions,” Ibid, 6, 3, 381 (1967).
3. Savins, J. G., “Method of Decreasing Friction Loss in Turbulent Liquids,” U. S. Patent No. 3, 361, 213 (1968).
4. Savins, J. G., “Drag Reduction Characteristics of Solutions of Macromolecules in Turbulent Pipe Flow,” Soc. Petr. Engr. Jnl. l. 4, 3, 203 (1964)
5. Savins, J. G., “Drag Reduction Characteristics of Solutions of Macromolecules in Turbulent Pipe Flow,” Trans. A. I. M. E., 231 11, 203 (1949).