@article{Broadberry2012,
author = {Broadberry, S. and Klein, A.},
title= {Aggregate and per capita GDP in Europe, 1870–2000: Continental, regional and national data with changing boundaries},
year = {2012},
doi = {10.1080/03585522.2012.651306},
volume = {60},
number = {1},
pages = {79--107},
}