@article{van Laningham2001,
author = {van Laningham, J. and Johnson, D.R. and Amato, P.},
title= {Marital happiness, marital duration and the u-shaped curve: Evidence from a five-wave panel study},
year = {2001},
doi = {10.1353/sof.2001.0055},
volume = {79},
number = {4},
pages = {1313--1341},
}