@article{Massey1998,
author = {Massey, D.S. and Denton, N.A.},
title= {The elusive quest for the perfect index of concentration: Reply to Egan, Anderton, and Weber},
year = {1998},
doi = {10.2307/3005706},
volume = {76},
number = {3},
pages = {1123--1133},
}