@article{Harttgen2014,
author = {Harttgen, K. and Vollmer, S. },
title= {A Reversal in the Relationship of Human Development with Fertility?},
year = {2014},
doi = {10.1007/s13524-013-0252-y},
journal = {Demography },
volume = {51},
number = {1},
pages = {173--184},
}