switch ($format) {
// BibTeX
case 'bibtex':
$res = $pica->getBibTex();
final_result($res, 'text/plain');
break;
// CSV
// CSV
case 'csv':
$res = $pica->getCsv();
final_result($res, 'text/plain');
break;
// Dublin Core
// Dublin Core
case 'dc':
$res = $pica->getDublinCore();
final_result($res, 'application/xml');
break;
// External PICA+
// External PICA+
case 'extpp':
$res = $pica->getPicaPlus();
final_result($res, 'application/xml');
break;
// JSON
// JSON
case 'json':
$res = $pica->getJson();
final_result($res, 'application/json');
break;
// OpenURL-KEV
