Digital Systems for Open Access to Formal and Informal Learning Demetrios G. Sampson, Dirk Ifenthaler, J. Michael Spector E-Book (pdf)

Ubiquitous and Mobile Learning in the Digital Age Demetrios G. Sampson, Pedro Isaias, Dirk Ifenthaler E-Book (pdf)

Smart Safety Management mit Ariadne SMS Wolf D. Käppler, Reinhold K. Pressler, Markus Siebel E-Book (pdf)