Effects of soil mechanical treatments combined with bramble and bracken control on the restoration of degraded understory in an ancient beech forest Sandrine Godefroid, Dennis Monbaliu, Wim Massant, Beatrijs Van der Aa, Bruno De Vos, Vincent Quivy and Nico KoedamAnn. For. Sci., 64 3 (2007) 321-331DOI: https://doi.org/10.1051/forest:2007009