@article{Label,
   author = {Gross, Tom and Prinz, Wolfgang},
   title = {Modelling Shared Contexts in Cooperative Environments: Concept, Implementation, and Evaluation},
   journal = {Computer Supported Cooperative Work: The Journal of Collaborative Computing},
   volume = {13},
   number = {3-4},
   pages = {283-303},
   note = {ISSN: 0925-9724},
   year = {2004}
}