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2. Ludwig Prandtl and the growth of fluid mechanics in Germany;Eckert;C. R. Mecanique,2017
3. Blasius: a life in research and education;Hager;Exp. Fluids,2003
4. Boundary Layer Theory;Schlichting,1979
5. On the influence of the Earth's rotation on ocean currents;Ekman;Ark. Mat. Astron. Fys.,1905