Flake, Stephan, and Wolfgang Müller. “Specification of Real-Time Properties for UML Models.”10.1109/HICSS.2002.994469__Proceedings of HICSS-35, 2002, doi:10.1109/HICSS.2002.994469.

Flake, Stephan, et al. “Agent-Based Modeling for Holonic Manufacturing Systems with Fuzzy Control.”10.1109/NAFIPS.1999.781697__Proceedings of NAFIPS’99, 18th International Conference of the North American Fuzzy Information Processing Society, IEEE, 1999, doi:10.1109/NAFIPS.1999.781697.