?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Putten%2C+M-A+van+der&rft.aulast=Putten&rft.aufirst=M-A+van+der&rft.degree=Master&rft.date=2009&rft.title=The+impact+of+sustainability+on+mainstream+Portfolios%2C+-+The+effects+for+an+investment+manager