@Inproceedings{EPTCS79.2,
  author    = {Back, Ralph-Johan and Eriksson, Johannes},
  year      = {2012},
  title     = {An Exercise in Invariant-based Programming with Interactive and Automatic Theorem Prover Support},
  editor    = {Quaresma, Pedro and Back, Ralph-Johan},
  booktitle = {{\rm Proceedings First Workshop on}
               CTP Components for Educational Software,
               {\rm Wroc{\l}aw, Poland, 31th July 2011}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {79},
  publisher = {Open Publishing Association},
  pages     = {29-48},
  doi       = {10.4204/EPTCS.79.2},
}