Kammer, Peter Manuel; Schöb, Christian; Kikvidze, Zaal; Choler, Philippe (2009). No change in the balance between competition and facilitation along an alpine stress gradient. In: Coles, Sandy; Dimopoulos, Panayotis (Hg.) Vegetation processes and human impact in a changing world (S. 226). Chania: University of Ioannina