@TECHREPORT {SFB649DP2012-025,
  AUTHOR={Hirschberger, Markus and Steuer, Ralph E. and Utz, Sebastian and Wimmer, Maximilian},
  TITLE={{Is socially responsible investing just screening? Evidence from mutual funds}},
  YEAR=2012,
  INSTITUTION={Sonderforschungsbereich 649, Humboldt Universit\"{a}t zu Berlin, Germany},
  TYPE={SFB 649 Discussion Paper},
  NOTE={available at http://sfb649.wiwi.hu-berlin.de/papers/pdf/SFB649DP2012-025.pdf},
  NUMBER={2012-025}
}