@workingPaper{BöschenFechtHenseWilhelm_1994,
title={An abstract machine for an object-oriented language with top-level classes},
author={Böschen, Christoph and Fecht, Christian and Hense, Andreas V. and Wilhelm, Reinhard},
doi={http://dx.doi.org/10.22028/D291-26136},
year={1994}
}