Digital
This publication marks 20 years of the Intrastat System, born in 1st January 1993, with the entered into force of the European Single Market, used for the collection of statistical data concerning trade of goods between European Union countries. Available only in Portuguese language
Instituto Nacional de Estatística - 20 anos do Sistema Intrastat : 1993-2012. Lisboa : INE, 2013. Available at www: <url:https://www.ine.pt/xurl/pub/>. ISBN 978-989-25-0247-2
