@article{ref1,
title="Measurement of dark adaptation in vitamin A deficiency by a new quantitative technique",
journal="Acta ophthalmologica (Copenhagen)",
year="1969",
author="Nordén, A. and Stigmar, G.",
volume="47",
number="3",
pages="716-722",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-639X",
doi="",
url="http://dx.doi.org/"
}