@article{ref1,
title="On the problem of the recreation of the population of large cities",
journal="Gigiena i Sanitariia",
year="1967",
author="Shafir, A. I.",
volume="32",
number="10",
pages="70-75",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9900",
doi="",
url="http://dx.doi.org/"
}