Quynh, T. N., Karl, H., Wolisz, A., &; Rebensburg, K. (2002). Using only Proportional Jitter Scheduling at the boundary of a Differentiated Service Network: simple and efficient. In Universal Multiservice Networks, 2002. ECUMN 2002. 2nd European Conference on (pp. 116--123).

Sroka, S., &; Karl, H. (2002). Using akaro with omnet++. In 2nd International OMNeT++ Workshop, Berlin, Germany.

Ngo-Quynh, T., Karl, H., Wolisz, A., &; Rebensburg, K. (2002). New scheduling algorithm for providing proportional jitter in differentiated services network. Proceedings of IST Mobile Communication and Wireless Telecommunications Summit, Thessaloniki, Greece.

Aguiar, A., Karl, H., &; Wolisz, A. (2002). Effects of prediction inaccuracy on the performance of channelstate-aware link layer schedulers. In Proc. of 1st Intl. Conf. on Mobile and Ubiquitous Multimedia (pp. 21--33).

Karl, H. (2001). Relaying in Wireless Access Networks –   A Capacity and Energy-Efficiency Perspective . In Proc. Wireless World Research Forum Kickoff Meeting (WWRF). München.

Karl, H. (2001). Relaying ñ bad for energy,  good for capacity? Rom/Italy: Eork-in-progress session of mobicom 2001.

Karl, H., &; Hentschel, T. (2001). IBMS 2 - Integriertes Bandbreiteneffizientes Mobiles Software-Radio System. In Zukunftsperspektiven der Mobilkommunikation, Symposium Bundesministerium für Bildung und Forschung.

Mengesha, S., Karl, H., &; Wolisz, A. (2001). Improving Goodput by Relaying in Transmission-Power-Limited Wireless Systems. In GI Jahrestagung (1) (pp. 537--544).

Karl, H., &; Mengesha, S. (2001). Analysing capacity improvements in wireless networks by relaying. In Proc. of IEEE Intl. Conf. on Wireless LANs and Home Networks (pp. 339--348).

Quynh, T., Karl, H., Wolisz, A., &; Rebensburg, K. (2001). Relative jitter packet scheduling for differentiated services. In Proc. 9th IFIP Conf. Perf. Modeling and Eval. of ATM &; IP Networks.

Quynh, T. N., Karl, H., Wolisz, A., &; Rebensburg, K. (2001). The influence of proportional jitter and delay on end to end delay in differentiated service network. In Network Computing and Applications, 2001. NCA 2001. IEEE International Symposium on (pp. 354--357).

Karl, H., Polze, A., &; Werner, M. (2000). Predictable Network Computing using Message-driven Scheduling. In Proc. the Workshop on Run-Time Systems for Parallel Programming.

Karl, H. (1999). Towards Quality of Service for Parallel Computing: An Overview of the MILAN Project. In High-Performance Computing and Networking, 7th International Conference, HPCN Europe 1999, Amsterdam, The Netherlands, April 12-14, 1999, Proceedings (pp. 841--850).https://doi.org/10.1007/BFb0100644 

Karl, H. (1999). Coscheduling through Synchronized Scheduling Servers -- A Prototype and Experiments. In Parallel and Distributed Processing, 11 IPPS/SPDP’99 Workshops Held in Conjunction with the 13th International Parallel Processing Symposium and 10th Symposium on Parallel and Distributed Processing, San Juan, Puerto Rico, USA, April 12-16, 1999, Proceedings (pp. 1115--1129).https://doi.org/10.1007/BFb0097997 

Karl, H. (1998). Bridging the gap between distributed shared memory and message passing. Concurrency - Practice and Experience, (11–13), 887--900.https://doi.org/10.1002/(SICI)1096-9128(199809/11)10:11/13&#38;#60;887::AID-CPE416&#38;#62;3.0.CO;2-0 

Baratloo, A., Karaul, M., Karl, H., &; M. Kedem, Z. (1998). An infrastructure for network computing with Java applets. Concurrency -- Practice and Experience, (11–13), 1029--1041.https://doi.org/10.1002/(SICI)1096-9128(199809/11)10:11/13&#38;#60;1029::AID-CPE412&#38;#62;3.0.CO;2-U 

Karl, H., Werner, M., &; Küttner, L. (1998). Experimental investigation of message latencies in the Totem protocol in the Presence of faults. IEEE Proceedings -- Software, (6), 219--227.https://doi.org/10.1049/ip-sen:19982443 

Karl, H., Werner, M., &; Kuttner, L. (1998). An Experimental Investigation of Message Latencies in the Totem Protocol in the Presence of Faults. In 24th EUROMICRO ’98 Conference, Engineering Systems and Software for the Next Decade, 25-27 August 1998, Vesteras, Sweden (pp. 10468--10475).https://doi.org/10.1109/EURMIC.1998.711841 

Karl, H., &; Werner, M. (1998). An optimal checkpointing interval for real-time systems. In Proc. Intl. Conf. Parallel and Distributed Processing Techniques and Applications (pp. 604--612).

Baratloo, A., Karaul, M., Karl, H., &; Kedem, Z. M. (1997). KnittingFactory: An Infrastructure for Distributed Web Applications. Technical Report.

Dreier, B., Huber, A., Zahn, M., Karl, H., &; Ungerer, T. (1996). ReGTime - Rent Gigaflops someTimes. In Proceedings Trends in Distributed Systems.

Dreier, B., Huber, A., Karl, H., Ungerer, T., &; Zahn, M. (1996). ReGTime - Rent Gigaflops someTimes. In Trends in Distributed Systems: CORBA and Beyond, International Workshop TreDS ’96, Aachen, Germany, October 1-2, 1996, Proceedings (pp. 84--93).https://doi.org/10.1007/3-540-61842-2_28