@article{ref1,
title="Accident blackspots and the bivariate negative binomial",
journal="Traffic engineering and control",
year="1988",
author="Senn, SJ and Collie, GS",
volume="29",
number="3",
pages="168-169",
abstract="It is shown how the method of maximum likelihood in connection with a bivariate negative binomial distribution may be used to separate treatment effects from regression to the mean effects when analyzing data giving the frequency of accidents in two time periods for a number of sites on a road network. The method is illustrated using data from the Lothian Road Accident Statistics System (LORASS).<p />",
language="",
issn="0041-0683",
doi="",
url="http://dx.doi.org/"
}