1. M. J. Walsh, ?Turbulent boundary layer drag reduction using riblets,? AIAA Pap., No. 169, 8 (1982).
2. E. R. G. Eckert and T. F. Irvine (Jr), ?Flow in corners of passages with noncircular cross sections,? Trans. ASME,78, 709 (1956).
3. V. K. Jonsson and E. M. Sparrow, ?Experiments on turbulent-flow phenomena in eccentric annular ducts,? J. Fluid Mech.,25, 65 (1966).
4. M. J. Walsh, ?Drag on a plate with longitudinal grooves and ribs,? in: Reduction of Viscous Friction [in Russian], Mashinostroenie, Moscow (1984), p. 189.
5. M. J. Walsh and L. M. Weinstein, ?Drag and heat transfer on surfaces with small longitudinal fins,? AIAA Pap., No. 1161, 11 (1978).