@article{Bock03:0,
  title = {UML 2 Activity and Action Models},
  author = {Conrad Bock},
  year = {2003},
  url = {http://www.jot.fm/issues/issue_2003_07/column3.pdf},
  tags = {meta-model, UML, Meta-Environment},
  researchr = {https://researchr.org/publication/Bock03%3A0},
  cites = {0},
  citedby = {0},
  journal = {Journal of Object Technology},
  volume = {2},
  number = {4},
  pages = {43-53},
}