function fetchCitation($article, $issue, $journal)
{
$templateMgr = TemplateManager::getManager($this->getRequest());
$templateMgr->assign(array('citationPlugin' => $this, 'article' => $article, 'issue' => $issue, 'journal' => $journal));
return $templateMgr->fetch($this->getTemplatePath() . '/citation.tpl');
}