International Conference on Drag Reduction University of Cambridge, BHRA (Association), Stephens, H. S., & Clarke, J. A. (1977). Drag reduction: Papers presented at the Second International Conference on Drag Reduction. BHRA Fluid Engineering.

International Conference on Drag Reduction University of Cambridge, BHRA (Association), H. S. Stephens, and J. A. Clarke. Drag Reduction: Papers Presented at the Second International Conference on Drag Reduction. Cranfield: BHRA Fluid Engineering, 1977.

International Conference on Drag Reduction University of Cambridge, et al. Drag Reduction: Papers Presented at the Second International Conference on Drag Reduction. BHRA Fluid Engineering, 1977.