@article{ref1,
title="The concept of craving and its measurement",
journal="Behaviour research and therapy",
year="1979",
author="Rankin, H. and Hodgson, R. and Stockwell, Timothy R.",
volume="17",
number="4",
pages="389-396",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0005-7967",
doi="",
url="http://dx.doi.org/"
}