Karl H, Löbbers M, Nieberg T. A data aggregation framework for wireless sensor networks. In: Proc. Dutch Technology Foundation ProRISC Workshop on Circuits, Systems and Signal Processing. ; 2003.

Klaue J, Gross J, Karl H, Wolisz A. Semantic-aware link layer scheduling of mpeg-4 video streams in wireless systems. In: 3rd Workshop of Applications and Services in Wireless Networks 2003 (ASWN 2003). ; 2003.

Neumann A, Fu X, Karl H. Prototype implementation and performance evaluation of a QoS-conditionalized handoff scheme for mobile IP networks. In: Computer Communications, 2003. CCW 2003. Proceedings. 2003 IEEE 18th Annual Workshop On. ; 2003:24--29.

Aguiar ACC, Hoene C, Klaue J, Karl H, Miesmer H, Wolisz A. Channel-Aware Schedulers For Voip And Mpe For Wireless Communications. In: Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC’03). ; 2003.

Karl H, Mengesha S, Hollos D. Relaying in Wireless Access Networks . London: Business Briefing: Wireless Technology 2002; 2002.

Köpke A, Handziski V, Karl H.  Making sensor networks intelligent. In: Proc. 7th Wireless World Research Forum (WWRF). Eindhoven/Netherlands; 2002.

Miesmer H, Sanneck H, Aguier A, Karl H. Concepts for a QoS-enabled, TCP/IP-oriented Link Layer in Beyond 3G Networks. In: Proc. of 6th Wireless World Forum. London / GB; 2002.

Hollos D, Karl H. A HiperLAN/2 simulation model in OMNeT++. In: Proc. of 2nd Intl. OMNet Workshop. Berlin ; 2002.

Ngo-Quynh T, Karl H, Wolisz A, Rebensburg K. New Scheduling Algorithm for Providing Proportional Jitter in  Differentiated Service Network . In: Proc. IST Mobile &; Wireless Telecommunications Summit 2002. ; 2002.

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.

Ngo-Quynh T, Karl H, Wolisz A, Rebensburg K. New scheduling algorithm for providing proportional jitter in differentiated services network. Proceedings of IST mobile communication and wireless telecommunications summit, Thessaloniki, Greece. 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. Bridging the gap between distributed shared memory and message passing. Concurrency - Practice and Experience. 1998;(11-13):887--900. doi: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. An infrastructure for network computing with Java applets. Concurrency -- Practice and Experience. 1998;(11-13):1029--1041. doi: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. Experimental investigation of message latencies in the Totem protocol in the Presence of faults. IEEE Proceedings -- Software. 1998;(6):219--227. doi:10.1049/ip-sen:19982443

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.

Baratloo A, Karaul M, Karl H, Kedem ZM. KnittingFactory: An Infrastructure for Distributed Web Applications. Technical Report. 1997.

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