I wrote a column about the internal rate of return of the Romanian pay-as-you-go pension system. This was published on three different portals (in Romanian):
Contributors: http://www.contributors.ro/administratie/cat-este-randamentul-pilonului-i-de-pensii/
Republica: https://republica.ro/un-calcul-esential-pentru-cei-care-contribuie-acum-la-sistemul-de-pensii-de-stat-cat-este-randamentul
Blog EconAcademia: http://blog.econacademia.net/2017/09/cat-este-randamentul-pilonului-de-pensii/