Old economics but perhaps an option for Christchurch.
GovLoop Topic;
http://www.govloop.com/forum/topics/what-if-government-could-innovate-without-the-risk/?utm_source=dailyawesome&utm_medium=email&utm_campaign=manibody&elq=7021d9298f2f4b32b337c2aabbe27e3f&elqCampaignId=1972
But more interesting (perhaps), a Deloitte paper mentioned in this
discussion;
http://www.deloitte.com/assets/Dcom-Canada/Local%20Assets/Documents/government/ca_en_gov_12-1285GPS-SocialImpactBonds_032612.pdf
regards
*Darron Passlow*