BibTeX entry -- Erik Ernst
  @PhdThesis{ernst99b,
    author =     {Erik Ernst},
    title =      {gbeta  -- a Language with Virtual Attributes, Block 
                  Structure, and Propagating, Dynamic Inheritance}, 
    school =     {Department of Computer Science, University of Aarhus, 
                  \AA{}rhus, Denmark},
    year =       {1999},
  }