?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Soethoudt%2C+J.M.&rft.aulast=Soethoudt&rft.aufirst=J.M.&rft.date=20+August+2009&rft.title=Unraveling+the+complexity+of+the+organic+catering+supply+chain&rft.genre=proceeding