ation and valid citationText then link to that
      if ($('#citation').length > 0 && front_matter.citationText) {
        doi.html('Citation');
        $('<a href="#citation"></a>')
          .text(front_matter.citationText)
          .appendTo(doi_p);
      } else {
        hide_byline_column("DOI");
      }
    } else {
      $('<a></a>')
         .attr('href', "https://doi.org/" + front_matter.doi)
         .html(front_matter.doi)
         .appendTo(doi_p);
    }

     // change plural form of authors/a