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De Boer, G.M. (author)Experimental research on the stability of bed protection and transport of stones on such a bottom protection. Investigated were the effects of duration and magnitude of the load, the shape, and placing density of the stones.master thesis 1998
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Boutovski, A. (author)Experimental research on the stability of dumped stones for bed protections with focus on the gradation of the stones. A bottom protection has more roughness than anticipated. The Shields criterion is still applicable (psi=0.03)master thesis 1998