OECD compendium of productivity indicators 2016. Paris : OECD, 2016. 126 s. OECD compendium of productivity indicators. Available on Internet: <http://www.oecd-ilibrary.org/industry-and-services/oecd-compendium-of-productivity-indicators-2016_pdtvy-2016-en> ISBN 978-92-64-25018-5.