@article{ref1,
title="Mobility of elderly persons in time and space in The Netherlands: flexible public transport for the elderly",
journal="Studies in health technology and informatics",
year="1998",
author="Tacken, M. and Rosenboom, H.",
volume="48",
number="",
pages="195-203",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0926-9630",
doi="",
url="http://dx.doi.org/"
}