<ul><li><a href=http://eur-lex.europa.eu/legal-content/EN/TXT/?qid=1457706993780&uri=CELEX:02013R0952-20131030 target=_blank>Regulation (EU) No 952/2013 on the Union Customs Code(Regulation (EU) No 952/2013 laying down the Union Customs Code, OJ L 269, p.1, adopted on 10 October 2013,  Article 211(2))</a></li><li><a href=https://dre.pt/application/file/631772 target=_blank>Decree-Law 298/1993 establishing the legal framework of port operation(Decreto Lei que estabelece o regime de operação portuária, Adopted 28/08/1993, Last modification 07/04/1995, Articles 2.a and 3.4 )</a></li><li><a href=http://www.pgdlisboa.pt/leis/lei_mostra_articulado.php?nid=1337&tabela=leis&ficha=1&pagina=1& target=_blank>Decree-Law 48/2011  that establishes a simplified legal framework for licensing of business( Decreto-Lei que simplifica o regime de acesso e de exercício de diversas actividades económicas no âmbito da iniciativa Licenciamento zero, Adopted 01/04/2011, Last modification 16/01/2015, Article 1)</a></li></ul>