1. Toms, A. B., Proc. Intern. Cong. Rheology, 1948, 2, 135 (North Holland Pub. Co., Amsterdam, 1949).
2. Fabula, A. G., Proc. Fourth Intern. Cong. Rheology, Part 3, 455 (Interscience Publishers, NY, 1965).
3. Hoyt, J. W., and Fabula, A. G., The Effect of Additives on Fluid Friction, NAVWEPS Report 8636, NOTS, China Lake, Calif., Dec. 1964, Amer. Serv. Tech. Inform. Agen. AD612 056.
4. Savins, J. S., “Drag Reduction Characteristics of Solutions of Micromolecules in Turbulent Flow”, Amer. Inst. Chem. Eng. Syrup. on Non-Newtonian Fluid Mech., 1963.
5. Wells, jun., C. S., Aerospace Indust. Assoc. Aerospace J., 3, No. 10 (1965).