Url for representation of an EPM-Document

Hi all,

with the url :

<Windchill-Server>/Windchill/servlet/AttachmentsDownloadDirectionServlet?oid=OR:wt.epm.EPMDocument:<ID from table EPMDOCUMENT>

it is possible to download the primary content of this epm-document (like CREO-part, assembly, Autocad-Drawing etc.)
Is it possible to download any existing representation (like pvz, pvs, thumbnail) from this epm-document in a similar way with a similar url?

Thanks a lot!