@article{Bengtsson2011,
author = {Bengtsson, T. and van Poppel, F.},
title= {Socioeconomic inequalities from past to present: An introduction},
year = {2011},
doi = {10.1016/j.eeh.2011.05.004},
journal = {Explorations in Economic History},
volume = {48},
number = {3},
pages = {343--356},
}