{Project} EU-COEXTRA: GM and non-GM supply chains: Their CO-EXistence and TRAceability. Runs 2002 - 2006. Project Leader(s): Stolze, Matthias, Research Institute of Organic Agriculture (FiBL), CH-5070 Frick. More information online at <http://www.coextra.org/ <http://www.coextra.org/>>.