<ul><li><a href=https://lovdata.no/dokument/NL/lov/2015-09-04-91 target=_blank>Postal law(Postloven LOV-2015-09-04-91, last changed 09.02.2017, §13)</a></li><li><a href=https://lovdata.no/dokument/SF/forskrift/2015-09-18-1063 target=_blank>Postal Regulation(Postforskriften, FOR-2015-09-18-1063, FOR-2018-02-01-130  §21)</a></li></ul>