Chartularium Sangallense : Band IIKarl Heidecker, Rafael Wagner, Bernhard Zeller, Peter Erhart · First published 2021Open the Tome
Chartularium Sangallense Bd. 1Peter Erhart, Karl Heidecker, Bernhard Zeller · First published 2013Open the Tome
Die Privaturkunden der KarolingerzeitPeter Erhart, Karl Josef Heidecker, Bernhard Zeller, Karl Heidecker · First published 2009Open the Tome
Charters and the use of the written word in medieval societyKarl Josef Heidecker · First published 2000Open the Tome
