<ul><li><a href=http://likumi.lv/doc.php?id=96611 target=_blank>Electronic Communications Law(Elektronisko sakaru likums, adopted on 28 October 2004, with latest modifications of 10 October 2019, Chapter XIII)</a></li><li><a href=https://www.sprk.gov.lv/ target=_blank>Public Utilities Commission Decision</a></li></ul>