@article{ref1,
title="American drinking practices: summary of findings from a national probability sample - II. Measurement of massed versus spaced drinking",
journal="Quarterly journal of studies on alcohol",
year="1968",
author="Cahalan, D. and Cisin, I. H.",
volume="29",
number="3",
pages="642-656",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0033-5649",
doi="",
url="http://dx.doi.org/"
}