@article{ref1,
title="Engagement in risky behaviours by 15-19-year-olds from Polish urban and rural areas",
journal="Annals of agricultural and environmental medicine",
year="2011",
author="Sygit, Katarzyna and Kołłątaj, Witold and Wojtyła, Andrzej and Sygit, Marian and Bojar, Iwona and Owoc, Alfred",
volume="18",
number="2",
pages="404-409",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1232-1966",
doi="",
url="http://dx.doi.org/"
}