@TECHREPORT {SFB649DP2017-025,
  AUTHOR={Benschop, Thijs and Cabrera, Brenda L\'{o}pez},
  TITLE={{Realized volatility of CO2 futures}},
  YEAR=2017,
  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/SFB649DP2017-025.pdf},
  NUMBER={2017-025}
}