Bruns, R., J. Dunkel, H. Billhardt, M. Lujak, and S. Ossowski,
"Using Complex Event Processing to support data fusion for ambulance coordination",
17th International Conference on Information Fusion (FUSION 2014), Salamanca, Spain, IEEE, pp. 1–7, 2014.
Bruns, R., J. Dunkel, and S. Ossowski,
"Advisory agents in the semantic web",
7th International Conference on Enterprise Information Systems (ICEIS-2005), no. 4, Portugal, INSTICC, pp. 90-96, 2005.
Brettlecker, G., C. Caceres, A. Fernandez, N. Fröhlich, A. Kinnunen, S. Ossowski, H. Schuldt, and M. Vasirani,
"Technology in Healthcare",
CASCOM: Intelligent Service Coordination in the Semantic Web: Birkhäuser, pp. 125-139, 2008.
Botti, V., H. Billhardt, V. Julián, and J. A. Rodriguez-Aguilar,
"Applications (Part VII)",
Agreement Technologies, "Law, Governance and Technology" Series, no. 8: Springer, Dordrecht, pp. 509-510, 2013.
Billhardt, H., J. Dunkel, A. Fernandez, M. Lujak, R. Hermoso, and S. Ossowski,
"A Proposal for Situation-aware Evacuation Guidance based on Semantic Technologies",
4th International Conference on Agreement Technologies (AT2016), no. 10207, Valencia, Spain, Springer LNCS, pp. 493-508, 2016.
Billhardt, H., V. Julián, J. M. Corchado, and A. Fernandez,
"Human-Agent Societies: Challenges and Issues",
International Journal of Artificial Intelligence, no. 13 (1), Roorkee, India, CESER, pp. 28-44, 2015.
Billhardt, H., M. Lujak, V. Sánchez-Brunete, A. Fernandez, and S. Ossowski,
"Dynamic Coordination of Ambulances for Emergency Medical Assistance Services",
Knowledge-Based Systems, Elsevier, no. 70, Amsterdam, The Netherlands, Elsevier, pp. 268-280, 2014.
Billhardt, H., A. Fernandez, M. Lujak, S. Ossowski, V. Julián, J. F. de Paz, and J. Z. Hernandez,
"Coordinating Open Fleets. A Taxi Assignment Example",
AI Communications, no. 30 (1), pp. 37-52, 2017.
Billhardt, H., A. Fernandez, M. Lujak, S. Ossowski, V. Julián, J. F. de Paz, and J. Z. Hernandez,
"Towards Smart Open Dynamic Fleets",
3rd International Conference on Agreement Technologies (AT2015), no. 9571, Athens, Greece, Springer LNCS, pp. 410-424, 2015.
Billhardt, H., C. E. Cuesta, R. Hermoso, M. Lujak, J. S. Perez-Sotelo, E. Argente, S. Esparcia, J. Görmer, K. Kirikal, and K. Taveter,
"Adaptive Agent Organisations (Chapter 20)",
Agreement Technologies, "Law, Governance and Technology" Series, no. 8: Springer, Dordrecht, pp. 321-353, 2013.
Billhardt, H., A. Fernandez, S. Ossowski, J. Palanca, and J. Bajo,
"Taxi Dispatching Strategies with Compensations",
Expert Systems With Applications, no. 122, pp. 173-182, 2019.
Billhardt, H., A. Fernandez, L. Lemus, M. Lujak, N. Osman, S. Ossowski, and C. Sierra,
"Dynamic Coordination in Fleet Management Systems: Toward Smart Cyber Fleets",
IEEE Intelligent Systems, no. 29 (3), pp. 70-76, 2014.
Billhardt, H., A. Fernandez, M. Lujak, and S. Ossowski,
"Agreement Technologies for Coordination in Smart Cities",
Applied Sciences, vol. 8, no. 5, Switzerland, MDPI, 2018.
Billhardt, H., and M. Lujak,
"Coordinating Emergency Medical Assistance (Chapter 35)",
Agreement Technologies, "Law, Governance and Technology" Series, no. 8 : Springer, Dordrecht, pp. 597-609, 2013.
Billhardt, H., R. Hermoso, S. Ossowski, S. Saugar, and J. M. Serrano,
"Infrastructures for Virtual Institutions",
First Round Table on Virtual Institutions and Legal Theory. The Confluence of Legal and Multi-Agent Systems Perspectives, Barcelona, Spain, 2005.
Billhardt, H., J. Dunkel, M. Lujak, A. Fernandez, R. Hermoso, and S. Ossowski,
"An Architecture for Situation-aware Evacuation Guidance in Smart Buildings",
1st International Workshop on Ambient Intelligence for Large Premises (AmILP 2016 at ECAI 2016), no. 1778, The Hague, the Netherlands, CEUR Workshop Proceedings, 2016.
Billhardt, H., M. Lujak, S. Ossowski, R. Bruns, and J. Dunkel,
"Intelligent event processing for emergency medical assistance",
Symposium on Applied Computing, SAC 2014, Gyeongju, Republic of Korea - March 24 - 28, 2014, no. 2014, pp. 200–206, 2014.
Billhardt, H., R. Centeno, A. Fernandez, R. Hermoso, R. Ortiz, S. Ossowski, and M. Vasirani,
"On the Relevance of Organizational Structures for a Technology of Agreement",
On the Move to Meaningful Internet Systems - LNCS, no. 5333: Springer-Verlag, pp. 138-149, 2008.
Billhardt, H., R. Hermoso, S. Ossowski, and R. Centeno,
"Trust-based Service provider Selection in Open Environments",
22nd Annual ACM Symposium on Applied Computing (SAC2007), Seoul, Corea del Sur, pp. 1375-1380, 2007.