Morphodynamic effects of stone and wooden groynes in a restored river reach Bahaeldeen Zaid, Paride Nardone, Michael Nones, Christoph Gerstgraser and Katinka Koll E3S Web Conf., 40 (2018) 02038 Published online: 05 September 2018 DOI: 10.1051/e3sconf/20184002038