Model-driven object-oriented development of systems : a behavioural-oriented approach / Raymond John van DiessenThe long-term preservation study of the DNEP project : an overview of the results / Raymond J. van Diessen and Johan F. SteenbakkersAuthenticity in a digital environment / Raymond J. van Diessen and Titia van der Werf-DavelaarPreservation requirements in a deposit system / Raymond J. van DiessenManaging media migration in a deposit system / Raymond J. van Diessen and Ben J. van Rijnsoever