public function getHistoryArticles()
    {
        if ($aArticlesIds = $this->getSession()->getVariable('aHistoryArticles')) {
            return $aArticlesIds;
        } elseif ($sArticlesIds = \OxidEsales\Eshop\Core\Registry::getUtilsServer()->getOxCookie('aHistoryArticles')) {
            return explode('|', $sArticlesIds);
        }
    }