American economist Oliver Williamson poses at his home in Berkeley, California, October 12, 2009. Williamson and Elinor Ostrom won the 2009 Nobel prize for economics for their work in economic governance, the prize committee said on Monday. Reuters Pictures 1 month ago

American economist Oliver Williamson poses at his home in Berkeley, California, October 12, 2009. Williamson and Elinor Ostrom won the 2009 Nobel prize for economics for their work in economic governance, the prize committee said on Monday.