@article{ref1,
title="Avenues and dangerous cross-roads in the Federal District",
journal="Salud publica de Mexico",
year="1969",
author="Olivares Urbina, C.",
volume="11",
number="3",
pages="343-348",
abstract="<p>[Abstract unavailable]</p> <p>Language: es</p>",
language="es",
issn="0036-3634",
doi="",
url="http://dx.doi.org/"
}