@article{DBLP:journals/scientometrics/ZeebroeckPH06,
author = {Nicolas van Zeebroeck and
Bruno van Pottelsberghe de la Potterie and
Wook Han},
title = {Issues in measuring the degree of technological specialisation
with patent data},
journal = {Scientometrics},
volume = {66},
number = {3},
year = {2006},
pages = {481-492},
ee = {http://dx.doi.org/10.1007/s11192-006-0035-y},
bibsource = {DBLP, http://dblp.uni-trier.de}
}