By Sighard F. Hoerner Fluid-Dynamic Lift: Practical Information on Aerodynamic and Hydrodynamic Lift (2nd Second Edition) [Hardcover]: Sighard F. Hoerner, H. V. Borst: Amazon.com: Books
Normalized Lift: An Energy Interpretation of the Lift Coefficient Simplifies Comparisons of the Lifting Ability of Rotating and Flapping Surfaces | PLOS ONE