Helmig, G., Scholkmann, B., & Untermann, M. (2002). Centre - region - periphery: Medieval Europe Basel 2002; [3rd International Conference of Medieval and Later Archaeology, Basel (Switzerland) 10. - 15. September 2002; preprinted papers; Band 1 : Keynote-lectures to the conference, sections 1 - 3. Bad Bellingen-Hertingen: Folio-Verl. Wesselkamp.

Helmig, Guido, Barbara Scholkmann, und Matthias Untermann. Centre - Region - Periphery: Medieval Europe Basel 2002; [3rd International Conference of Medieval and Later Archaeology, Basel (Switzerland) 10. - 15. September 2002; Preprinted Papers; Band 1 : Keynote-lectures to the Conference, Sections 1 - 3. Bad Bellingen-Hertingen: Folio-Verl. Wesselkamp, 2002.

Helmig, Guido, Barbara Scholkmann, und Matthias Untermann. Centre - Region - Periphery: Medieval Europe Basel 2002; [3rd International Conference of Medieval and Later Archaeology, Basel (Switzerland) 10. - 15. September 2002; Preprinted Papers; Band 1 : Keynote-lectures to the Conference, Sections 1 - 3. Bad Bellingen-Hertingen: Folio-Verl. Wesselkamp, 2002.