User-agent: *
Disallow: /contact.php
Disallow: /references.php
Disallow: /documents/reference01.pdf
Disallow: /documents/reference02.pdf
Disallow: /documents/reference03.pdf
Disallow: /documents/reference04.pdf
Disallow: /documents/reference05.pdf
Disallow: /documents/reference06.pdf
Disallow: /documents/reference07.pdf
Disallow: /documents/reference08.pdf