global $_GET, $PageStartFmt, $PageEndFmt, $PageHeaderFmt, $ScriptUrl, $bibentry, $bibfile, $bibref;
  $bibfile = $_GET['bibfile'];
  $bibref = $_GET['bibref'];
  SDV($ScriptUrl, FmtPageName('$PageUrl', $pagename));

 // REMOVED for newer PHP installation, JMS 03/05/09
 // see http://www.pmwiki.org/wiki/Cookbook/BibtexRef
 //  global $HTTP_GET_VARS, $PageStartFmt, $PageEndFmt, $PageHeaderFmt, $ScriptUrl, $bibentry, $bibfile, $bibref;
 //  $bibfile = $HTTP_GET_VARS['bibfile'];
 //  $bibref = $HTTP_GET_VARS['bibref'];