The follow up to his February 2015 paper

 

https://cdn.auckland.ac.nz/assets/business/about/our-research/research-institutes-and-centres/RPRC/PensionBriefing/PC%202015-2%20The%20coming%20debate%20on%20New%20Zealand%20Superannuation%20-%20the%20review%20process.pdf