Analisis korelasi faktor-faktor fundamental terhadap return dan future earnings saham indeks LQ45 di bursa efek Indonesia pada periode pra krisis (2004-2006) dan krisis global (2007-2009) = Fundamental analysis correlation on return and future earnings stock of listed company in LQ45 index Indonesia stock exchange before global crisis (2004- 2006) and global crisis (2007-2009)