Pengaruh agency cost free (cash flow, leverage) dan karakteristik perusahaan (profitability, liquidity) terhadap dividend policy pada perusahaan-perusahaan yang terdaftar di Bursa Efek Indonesia tahun 2006-2011 = The effect of agency cost free cash flow leverage and company characteristics profitability liquidity on dividend policy of listed companies in Indonesia Stock Exchange for the period of 2006-2011