@techreport{Haverstick2009,
author = {Haverstick, K. and Zhivan, N.A.},
title= {Older Americans on the go: How often, where, and why?},
year = {2009},
publisher = {Center for Retirement Research at Boston College},
address = {Chestnut Hill, MA},
institution = {Research brief; 9-18},
}