@article{Sassler2018,
author = {Sassler, S. and Michelmore, K. and Qian, Z.},
title= {Transitions from sexual relationships into cohabitation and beyond},
year = {2018},
doi = {10.1007/s13524-018-0649-8},
volume = {55},
number = {2},
pages = {511--534},
}