\n"; echo "\n"; echo "\n"; echo "\n"; echo "\n"; echo "\n"; echo "\n"; echo "\n"; echo "\n"; foreach($doi as $key => $doi_value) { echo "\n"; echo " \n"; echo "\n"; echo "\n"; echo " \n"; echo "\n"; } echo "\n"; echo "

\n"; echo " \n"; echo " \n"; echo " \n"; echo " "; echo $auteurs[$key] ." (". $jaar[$key] ."). "; echo "\"". $titel[$key] ."\". "; echo $journal[$key] .", ". $volume[$key] .", ". $pages[$key]; echo ($pdf[$key] != '' ? " (PDF)" : '') ." \n"; echo "

\n"; echo "\n"; echo "\n"; ?>