@mastersthesis{Wickert2007,
  author      = {Claudia Wickert},
  title       = {Breeding white storks in former East Prussia : comparing predicted relative occurrences across scales and time using a stochastic gradient boosting method (TreeNet), GIS and public data},
  type        = {masterthesis},
  school      = {Universit{\"a}t Potsdam},
  year        = {2007},
}