@article{ref1,
title="Mobility of the elderly in time and space in the Netherlands: An analysis of the Dutch National Travel Survey",
journal="Transportation",
year="1998",
author="Tacken, Mart",
volume="25",
number="4",
pages="379-393",
abstract="Mobility is an aspect of the quality of life, especially for the elderly. Mobility is a necessary condition for independence.",
language="",
issn="0049-4488",
doi="10.1023/A:1005042614848",
url="http://dx.doi.org/10.1023/A:1005042614848"
}