docs: def from_etree(root):
          """
          Load up the citations, if present, for initializing with the Voevent.
          """
          cite_list = []
          citations = root.xpath('Citations/EventIVORN')
          if citations:
              description = root.xpath('Citations/Description')
              if description:
                  description_text = description[0].text
              else:
                  description_text = None
              for entry in root.Citations.EventIVORN:
                  if entry.text:
                      cite_list.append(
                          Cite(ref_ivorn=entry.text,
                               cite_type=entry.attrib['cite'],
                               description=description_text)
                      )
                  else:
                      logger.info(
                          'Ignoring empty citation in {}'.format(
                              root.attrib['ivorn']))
          return cite_list