@TECHREPORT {SFB649DP2016-020,
  AUTHOR={Zharova, Alona and Mihoci, Andrija and H\"{a}rdle, Wolfgang Karl},
  TITLE={{Academic Ranking Scales in Economics: Prediction and Imputation}},
  YEAR=2016,
  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/SFB649DP2016-020.pdf},
  NUMBER={2016-020}
}