code: def get_abbreviations(self):
          
          abbreviations = []
          try:
              type_abbreviation = self.session.get_resource(BASE_URI_TYPES % "abbreviation"
                                                          , self.session.get_class(surf.ns.ECRM['E55_Type']))
              abbreviations = [unicode(label)
                                  for name in self.ecrm_P1_is_identified_by
                                      for abbreviation in name.ecrm_P139_has_alternative_form
                                          for label in abbreviation.rdfs_label
                                              if name.uri == surf.ns.EFRBROO['F12_Name']
                                                  and abbreviation.ecrm_P2_has_type.first == type_abbreviation]
          except Exception as e:
              logger.debug("Exception raised when getting abbreviations for %a"%self)
          finally:
              return abbreviations
docs: Get abbreviations of the names of the author.
  
          :return: a list of strings (empty list if no abbreviations available).