@article{Klein_1993,
title={Tracking Visitor Circulation in Museum Settings},
volume={25},
ISSN={1552-390X},
url={http://dx.doi.org/10.1177/0013916593256007},
DOI={10.1177/0013916593256007},
number={6},
journal={Environment and Behavior},
publisher={SAGE Publications},
author={Klein,
Hans-Joachim},
year={1993},
month=nov,
pages={782–800} }