@techreport{Casper2008,
author = {Casper, L. and Brandon, P. and DiPrete, T. and Sanders, S. and Smock, P.},
title= {Rethinking change and variation in unions},
year = {2008},
URL = {http://www.soc.duke.edu/~efc/Docs/pubs/EFC%20FINAL%20AUG%2018%20complete%20w%20appendice.pdf},
institution = {Designing new models for explaining family change and variation},
number = {Final report submitted to the U.S. National Institute of Child Health and Human Development},
}