1. Restoration of species-rich dry heaths: the importance of appropriate soil conditions;Graaf;Acta Bot. Neerl.,1998
2. Feasibility of target communities in a Dutch brook valley system;Prins;Acta Bot. Neerl.,1998
3. Dispersal distance and achene quality of the rare anemochorous species Arnica montana L.: implications for conservation;Strykstra;Acta Bot. Neerl.,1998