@article{ref1,
title="Pistol regulation: Its principles and history. Part II",
journal="American journal of police science",
year="1932",
author="Frederick, KT",
volume="3",
number="1",
pages="72-82",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="1547-6154",
doi="",
url="http://dx.doi.org/"
}