SELECT stuff((SELECT DISTINCT '/'+ CAST (SRCDOC.HEDOCNUM AS VARCHAR)
FROM HEDENTRELATIONS
INNER JOIN HEDOCENTRIES AS SRCDOC ON HEDENTRELATIONS.HESRCDENTID = SRCDOC.HEID
INNER JOIN HEDOCENTRIES AS DSTDOC ON HEDENTRELATIONS.HEDESTDENTID = DSTDOC.HEID
WHERE DSTDOC.HEID=@$Context$RefID
for xml path('')), 1, 1, '')