Gerd Wessling (Germany) is a physicist with long-term connections to places like Auroville (India), Schumacher College (UK) and Totnes (UK). He is Co-Founder of Transition Town Bielefeld and of Transition Netzwerk D/A/CH (Germany/Austria/ Switzerland). As a certified Transition Trainer he is leading Europe wide Transition workshops. He facilitates courses at Schumacher College. http://www.transition-initiativen.de.
Or go to Central Books & type in "Wealth of the Commons"