2011 · Reinhard Reiter, Frenzl Benedikt, et al. · Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) · 1
2007 · Monika Manthey‐Karl, Horst Karl, et al. · Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture)
2007 · Reinhard Reiter, Monika Manthey‐Karl, et al. · Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture)