@article{ref1,
title="Social access and the clustering of personal connections",
journal="Social networks",
year="1980",
author="Hammer, Muriel",
volume="2",
number="4",
pages="305-325",
abstract="Analysis of an elementary level of social structure may be approached through a systematic description of who has access to whom. &quot;Access&quot; itself is a potential and cannot be directly measured, but differential actual acquaintanceship among sets of individuals can be presumed to reflect degrees of access. The paper presents a preliminary quantitative analysis of the systematic relationships shown by the patterns of acquaintanceship in several small social networks in the metropolitan New York area.<p />",
language="",
issn="0378-8733",
doi="10.1016/0378-8733(80)90001-5",
url="http://dx.doi.org/10.1016/0378-8733(80)90001-5"
}