1. ANONYMUS
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3. van BREUGEL J.W. Metmgen in de grenslaagstrommg langs een geribbelde wand. Technological Univ. Delft. April 1963.
4. EINSTEIN H.A. The bed load function for sediment transportation in open channel flow. U.S. Dep. of Agr. Tech. Bull no 1026 1950.