@misc{Riedel2004,
  author    = {Riedel, Peter},
  title     = {K{\"o}hler, D. (Red.), Mittelalter im Weserraum; Holzminden, Mitzkat, 2003},
  year      = {2004},
  language  = {de}
}
@misc{Riedel2012,
  author    = {Riedel, Peter},
  title     = {Oefelein, R., Oefelein, C., Pilgerspuren auf mittelalterlichen Glocken in Brandenburg; Berlin, be.bra, 2012},
  year      = {2012},
  language  = {de}
}
@misc{Riedel2008,
  author    = {Riedel, Peter},
  title     = {Weigel, P., Ordensreform und Konziliarismus: der Franziskanerprovinzial Matthias D{\"o}ring (1427-1461); Frankfurt am Main, Lang, 2005},
  year      = {2008},
  language  = {de}
}
@misc{Riedel2010,
  author    = {Riedel, Peter},
  title     = {Sterba, T., Herders neues Kl{\"o}sterlexikon; Freiburg, Herder, 2010},
  year      = {2010},
  language  = {de}
}