@incollection{Lackner2020,
  author    = {Hendrik Lackner},
  title     = {\S 9 Promotion; Doktorandinnen und Doktoranden},
  series = {BeckOK Hochschulrecht Niedersachsen},
  edition   = {20. Auflage},
  publisher = {C.H. Beck},
  address   = {M{\"u}nchen},
  year      = {2020},
  language  = {de}
}