OECD Economic Surveys: Portugal 2019 : February 2019. Volume 2019/5. Paris : OECD, 2019. 142 s. OECD Economic Surveys. Available on Internet: <https://www.oecd-ilibrary.org/economics/oecd-economic-surveys-portugal-2019_eco_surveys-prt-2019-en> ISBN 978-92-64-31275-3.