Cernusca, A.; Tappeiner, U.; Bahn, M.; Bayfield, N.; Chemini, C.; Fillat, F.; Graber, W.; Rosset, M.; Siegwolf, R.; Tenhunen, J. Ecomont Ecological Effects of Land Use Changes on European Terrestrial Mountain Ecosystems. Pirineos 1996, 147-148, 145-172.