@article{Van Poppel1999,
author = {Van Poppel, F.W.A. and Nelissen, J.},
title= {The proper age to marry: social norms and behaviour in 19th century Netherlands. The History of the Family},
year = {1999},
journal = {An international quarterly},
volume = {4},
number = {1},
pages = {51--76},
}