@book{Kessler2012,
  author    = {Kessler, Mario},
  title     = {Die Geschichte der DDR aus der Sicht amerikanischer Forscher},
  isbn      = {978-3-941880-60-3},
  year      = {2012},
  language  = {de}
}
@book{Kessler2003,
  author    = {Kessler, Mario},
  title     = {Arthur Rosenberg : ein Historiker im Zeitalter der Katastrophen (1889 - 1943)},
  series = {Zeithistorische Studien},
  volume    = {24},
  journal   = {Zeithistorische Studien},
  publisher = {B{\"o}hlau},
  address   = {K{\"o}ln},
  isbn      = {3-412-04603-5},
  pages     = {335 S.},
  year      = {2003},
  language  = {de}
}