@phdthesis{Voelkening2001,
  author    = {V{\"o}lkening, Helga},
  title     = {Shekhina und Maria - zwei weibliche himmlische Gestalten im mittelalterlichen Judentum und Christentum},
  publisher = {Univ. Potsdam},
  address   = {Potsdam},
  pages     = {117 S.},
  year      = {2001},
  language  = {de}
}
@phdthesis{Voelkening2016,
  author    = {V{\"o}lkening, Helga},
  title     = {Imago Dei versus Kultbild},
  school      = {Universit{\"a}t Potsdam},
  pages     = {491},
  year      = {2016},
  language  = {de}
}