@inbook{OECD2016,
author = {OECD},
title= {Indexes and estimation techniques},
year = {2016},
doi = {10.1787/reg_glance-2016-50-en},
booktitle = {OECD regions at a glance},
address = {Paris},
publisher = {OECD Publishing},
pages = {174--177},
}