Towards a Definition of Digital Information Preservation Object. - Hugo Quisbert; Margarita Korenkova; Ann Hägerfors (MTSR, 2007)

Using Agents for Long-Term Digital Reservation the PROTAGE Project. - Josep Lluís de la Rosa; Johan E. Bengtsson; Raivo Ruusalepp; Ann Hägerfors; Hugo Quisbert (DCAI, 2008)

On long-term digital preservation information systems: a framework and characteristics for development. - Hugo Quisbert (2008)