$isbn = $record->subfield( '773', 'z' ) || '';
$issn = $record->subfield( '773', 'x' ) || '';
if ($mtx eq 'journal') {
- $title .= "&rft.title=" . (($record->subfield( '773', 't' ) || $record->subfield( '773', 'a')));
+ $title .= "&rft.title=" . ( $record->subfield( '773', 't' ) || $record->subfield( '773', 'a') || q{} );
} else {
- $title .= "&rft.btitle=" . (($record->subfield( '773', 't' ) || $record->subfield( '773', 'a')) || '');
+ $title .= "&rft.btitle=" . ( $record->subfield( '773', 't' ) || $record->subfield( '773', 'a') || q{} );
}
foreach my $rel ($record->subfield( '773', 'g' )) {
if ($pages) {