Query with max date

Hi,

I need from this query the last POR1.Docdate for each article. How can I transact it?

SELECT  ItemCode, ITEMNAME, [EK] EK, [VK] VK   FROM (SELECT T0.[ItemCode], T0.ItemName, ISNULL(T1.[Price], 0) Price, T2.[ListName]

FROM

[dbo].[OITM]  T0 INNER JOIN [dbo].[ITM1]  T1 ON T0.[ItemCode] = T1.[ItemCode] INNER JOIN OPLN T2 ON T1.[PriceList] = T2.[ListNum]) P

PIVOT (   max(PRICE)   FOR LISTNAME IN ([EK], [VK])

) AS PVT

ORDER BY ItemCode

Thanks