@article{ref1,
title="Phases of sleep and spontaneous smiles",
journal="Acta psychologica",
year="1965",
author="Tcheng, F. C. and Laroche, J. L.",
volume="24",
number="",
pages="1-28",
abstract="<p>[Abstract unavailable]</p><p>Language: fr</p>",
language="fr",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}