Problemas com inner join

Server: Msg 8120, Level 16, State 1, Line 17
Column ´DAUTOR.NOME´ is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
Server: Msg 8120, Level 16, State 1, Line 17
Column ´DAUTOR.SOBRENOME´ is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
Server: Msg 8120, Level 16, State 1, Line 17
Column ´DDOC.TITULO´ is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
As mensagens acima acontecem sempre que rodo a seguinte query


SELECT COUNT(DMOV.DATA_EMP)AS ´QUANT. EMPREST.´, DAUTOR.NOME, DAUTOR.SOBRENOME, DDOC.TITULO
FROM ((DAUTOR INNER JOIN DDOCAUTO
ON DAUTOR.COD_AUTOR = DDOCAUTO.COD_AUTOR)
INNER JOIN DMOV
ON DDOCAUTO.COD_DOC = DMOV.COD_DOC)
INNER JOIN DDOC
ON DMOV.COD_DOC = DDOC.COD_DOC
where data_emp between ´2007-02-05 00:00:00.000´ and ´2007-06-19 14:00:00.000´
GROUP BY dmov.cod_doc


eu gostaria de montar esta query, e infelizmente, da o erro acima alguem sabe como resolver /???


desde já agradeço
abraços !!!