Fu X, Karl H, Kappler C. QoS-Conditionalized Handoff for Mobile IP. In: NETWORKING 2002, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications, Second International IFIP-T Networking Conference, Pisa, Italy, May 19-24, 2002, Proceedings. ; 2002:721--730. doi:10.1007/3-540-47906-6_58

Hollos D, Karl H. A protocol extension to HiperLAN/2 to support single-relay networks. In: Mobile Ad-Hoc Netzwerke, 1. Deutscher Workshop Über Mobile Ad-Hoc Netzwerke WMAN 2002, 25.-26. März 2002 in Ulm. ; 2002:91--107.

Xing W, Karl H, Wolisz A, Müller H. M-SCTP: Design and prototypical implementation of an end-to-end mobility concept. In: In Proc. 5th Intl. Workshop The Internet Challenge: Technology and Applications. ; 2002:43.

Quynh TN, Karl H, Wolisz A, Rebensburg K. 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. ; 2002:116--123.

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

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

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

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

Karl H, Hentschel T. IBMS 2 - Integriertes Bandbreiteneffizientes Mobiles Software-Radio System. In: Zukunftsperspektiven Der Mobilkommunikation, Symposium Bundesministerium Für Bildung Und Forschung. ; 2001.

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

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

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

Quynh TN, Karl H, Wolisz A, Rebensburg K. 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. ; 2001:354--357.

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

Karl H. 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. ; 1999:841--850. doi:10.1007/BFb0100644

Karl H. 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. ; 1999:1115--1129. doi:10.1007/BFb0097997

Karl H, Werner M, Kuttner L. 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. ; 1998:10468--10475. doi:10.1109/EURMIC.1998.711841

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

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

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