Häring, D.A.; Scharenberg, A.; Heckendorn, F.; Dohme, F.; Lüscher, A.; Maurer, V.; Suter, D. and Hertzberg, H. (2007) Tanniferous forage plants: Agronomic performance, palatability and efficacy against parasitic nematodes in sheep. Renewable Agriculture and Food Systems, 23 (1), pp. 19-29.