@inproceedings{WideraMessingKernIsbernerIsbernerBeierle05Edutainment,
    AUTHOR = {M. Widera and B. Messing and G. Kern-Isberner and 
              M. Isberner and C. Beierle},
    TITLE = "An Extendable System for the Specification and Generation
             of Interactive Self-Tests",
    BOOKTITLE = {Edutainment: Technology and Application},
    EDITOR = "Z. Pan and R. Aylett and H. Diener and X. Jin",
    publisher = {Springer-Verlag},
    series    = {Lecture Notes in Computer Science},
    volume    = {3942},
    year      = {2006},
    pages     = {316--321}    }