{"release":null,"nodes":[{"number":"33.20U","type":"TR","title":"Security principles for the UMTS","series":33,"status":"Withdrawn under change control","initial_release":"UMTS","primary_group":null,"portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=2867"}],"edges":[]}