Dat C. Ma, Joe Y.-C. Lin, Maria E. Orlowska. On Grouping of Activities Instances in Workflow Management Systems. In Jorge Cardoso, José Cordeiro, Joaquim Filipe, editors, ICEIS 2007 - Proceedings of the Ninth International Conference on Enterprise Information Systems, Volume EIS, Funchal, Madeira, Portugal, June 12-16, 2007. pages 125-130, 2007.
Abstract is missing.