1. Barr N (2003) The Welfare State as Piggy Bank. Oxford University Press, Oxford, pp 28–49
2. Barr N, Diamond P (2008) Reforming pensions: principles and policy choices. Oxford University Press, New York
3. Baugniet W (2014) The protection of occupational pensions under European Union law on the freedom of movement for workers. Resource document. European University Institute, Florence. https://cadmus.eui.eu/handle/1814/33869. Accessed 10 Dec 2020
4. Bodie Z, Marcus AJ, Merton RC (1998) Defined benefit versus defined contribution pension plans: what are the real trade-offs? In: Bodie Z, Shoven JB, Wise DA (eds) Pensions in the U.S. Economy, pp 139–162. Resource document. http://www.nber.org/chapters/c6047. Accessed 21 Dec 2020
5. Charpentier F (2009) Les retraites en France et dans le monde. Economica, Paris