Since 2007 a group of citizens in Rotterdam (The Netherlands) has been active under the name Eetbaar Rotterdam (Edible Rotterdam). Coming from different disciplines this expert group has been stimulating and initiating urban agriculture in Rotterdam, because they believe urban agriculture can greatly benefit the city.
This independent research was recently presented to a wide range of local and regional actors. The English summary of this highly interesting work is available here:
http://www.cityfarmer.info/2011/06/27/room-for-urban-agriculture-in-rotterdam/