@article{KleinN-TOPLAS,
  author={Gerwin Klein and Tobias Nipkow},
  title={A Machine-Checked Model for a {Java}-Like Language, Virtual Machine and Compiler},
  journal=TOPLAS,
  volume = {28}, 
  number = {4}, 
  year = {2006}, 
  pages = {619--695},
  doi = {http://doi.acm.org/10.1145/1146809.1146811}
}