1. American Academy of Actuaries (2014). The 80% Pension Funding Myth. Essential Elements: Making Complex Public Policy Issues Clear. https://www.actuary.org/sites/default/files/files/Pension%20Funding.pdf
2. Barr, N. (2013). The Pension System in Finland: Adequacy, Sustainability and System Design. Evaluation of the Finnish Pension System/Part 1. Finish Centre for Pensions. https://www.julkari.fi/bitstream/handle/10024/129172/ThepensionsysteminFinlandAdequacysustainabilityandsystemdesign.pdf?sequence=1
3. Blake, D. (2003). Is Immigration the Answer to the UK’s Pension Crisis? Discussion Paper: UBS Pensions Series 015 (465). Financial Markets Group, London School of Economics and Political Science. http://eprints.lse.ac.uk/24864/
4. Feature Selection
5. Locally Weighted Regression: An Approach to Regression Analysis by Local Fitting