@article{ref1,
title="Influence of different sequences of optical stimuli on the estimation of duration of a given interval of time",
journal="Acta psychologica",
year="1951",
author="Zeeman, W.P.C. and Roelofs, C.Otto",
volume="8",
number="",
pages="89-128",
abstract="A contribution to knowledge of the time-sense.<p />",
language="",
issn="0001-6918",
doi="10.1016/0001-6918(51)90007-8",
url="http://dx.doi.org/10.1016/0001-6918(51)90007-8"
}