@phdthesis{Label,
   author = {Gross, Tom and Oemig, Christoph},
   title = {COBRA: A Constraint-Based Awareness Management Framework},
   university = {Computer-Supported Cooperative Work Group, Faculty of Media, Bauhaus-University Weimar},
   type = {Technical Report # BUW-CSCW-2006-04},
   year = {2006}
}