Non-repudiation and audits in e-learning

E. Weippl:
"Non-repudiation and audits in e-learning";
Vortrag: Proceedings of E-Learn, Vancouver, Canada (eingeladen); 24.10.2005 - 28.10.2005; in:"Proceedings of E-Learn 2005", (2005), S. 1785 - 1790.