@article{Van Leeuwen1996,
author = {Van Leeuwen, M.H.D. and Maas, I.},
title= {Long-term social mobility: Research agenda and a case study (Berlin, 1825-1957)},
year = {1996},
doi = {10.1017/S0268416000003477},
journal = {Continuity and Change},
volume = {11},
number = {3},
pages = {399--433},
}