Contributo alla cronotassi degli abati cassinesi di S. Sisto di Piacenza (1425-1810)

[Autom. eng. transl.] Despite at least eight previous attempts, some even quite recent, to compile the chronotaxis of the abbots of S. Sisto of Piacenza during the period in which it belonged to the Benedictine congregation in Cassino, various difficulties in identifying and achieving useful documentation had so far prevented them from reaching satisfactory results in this regard. The contribution, moving on the widest possible data base, therefore tries to fill that gap.