2000 · Susanne Elmholt, Kasia Debosz, et al. · Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) · 6
2000 · Per Schjønning, Lars J. Munkholm, et al. · Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) · 1