.doi)
           .appendTo(doi_p);
      }

       // change plural form of authors/affiliations
      if (front_matter.authors.length === 1) {
        var grid = $('.authors-affiliations');
        grid.children('h3:contains("Authors")').text('Author');
        grid.children('h3:contains("Affiliations")').text('Affiliation');
      }

      // remove d-appendix and d-footnote-list local styles
      $('d-appendix > style:first-child').remove();
      $('d-footnote-list > style:first-child').remove();

    