@inproceedings{SchonefeldWitt2016,
  author    = {Schonefeld, Oliver and Witt, Andreas},
  title     = {Towards validation of concurrent markup},
  booktitle = {Proceedings of Extreme Markup Languages 2006},
  pages     = {11},
  year      = {2016},
  abstract  = {XCONCUR allows for the annotations of multiple concurrent hierarchies, but lacks cross-layer validation. This paper explores the requirements for a constraint-based approach for such a validation process.},
  language  = {en}
}