1. Sandel MJ. Justice. What’s the right thing to do? London: Penguin Books; 2009.
2. Policy Network, Wiardi Beckman Stichting, Foundation for Progressive European Studies (FEPS). The Amsterdam Process. Social Progress in the 21st Century. A Social Investment, Labour Market Reform and Intergenerational Inequality. London, UK: Policy Network, Wiardi Beckman Stichting, Foundation for Progressive European Studies (FEPS); 2011.