Karl, Holger, Marc Löbbers, and Tim Nieberg. “A Data Aggregation Framework for Wireless Sensor Networks.” In Proc. Dutch Technology Foundation ProRISC Workshop on Circuits, Systems and Signal Processing, 2003.

Klaue, Jirka, James Gross, Holger Karl, and Adam Wolisz. “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, Axel, Xiaoming Fu, and Holger Karl. “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, 24--29, 2003.

Aguiar, Ana Cristina Costa, Christian Hoene, Jirka Klaue, Holger Karl, Horst Miesmer, and Adam Wolisz. “Channel-Aware Schedulers For Voip And Mpe For Wireless Communications.” In Proc. of 8th Intl. Workshop on Mobile Multimedia Communications (MoMuC’03), 2003.

Karl, Holger, Seble Mengesha, and Daniel Hollos. Relaying in Wireless Access Networks . London: Business Briefing: Wireless Technology 2002, 2002.

Köpke, Andreas, Vlado Handziski, and Holger Karl. “Making Sensor Networks Intelligent.” In Proc. 7th Wireless World Research Forum (WWRF). Eindhoven/Netherlands, 2002.

Miesmer, Horst, Henning Sanneck, Ana Aguier, and Holger Karl. “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., and Holger Karl. “A HiperLAN/2 Simulation Model in OMNeT++.” In Proc. of 2nd Intl. OMNet Workshop. Berlin , 2002.

Ngo-Quynh, Thu, Holger Karl, Adam Wolisz, and Klaus Rebensburg. “New Scheduling Algorithm for Providing Proportional Jitter in  Differentiated Service Network .” In Proc. IST Mobile &; Wireless Telecommunications Summit 2002., 2002.

Fu, Xiaoming, Holger Karl, and Cornelia Kappler. “QoS-Conditionalized Handoff for Mobile IP.”https://doi.org/10.1007/3-540-47906-6_58__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, 721--730, 2002.https://doi.org/10.1007/3-540-47906-6_58 .

Hollos, Daniel, and Holger Karl. “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, 91--107, 2002.

Xing, Wei, Holger Karl, Adam Wolisz, and Harald Müller. “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, 43, 2002.

Quynh, Thu Ngo, Holger Karl, Adam Wolisz, and Klaus Rebensburg. “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, 116--123, 2002.

Sroka, Steffen, and Holger Karl. “Using Akaro with Omnet++.” In 2nd International OMNeT++ Workshop, Berlin, Germany, 2002.

Ngo-Quynh, Thu, Holger Karl, Adam Wolisz, and Klaus Rebensburg. “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, Holger Karl, and Adam Wolisz. “Effects of Prediction Inaccuracy on the Performance of Channelstate-Aware Link Layer Schedulers.” In Proc. of 1st Intl. Conf. on Mobile and Ubiquitous Multimedia, 21--33, 2002.

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

Karl, Holger. “Relaying ñ Bad for Energy,  Good for Capacity?” Rom/Italy: Eork-in-progress session of mobicom 2001, 2001.

Karl, Holger, and T. Hentschel. “IBMS 2 - Integriertes Bandbreiteneffizientes Mobiles Software-Radio System.” In Zukunftsperspektiven Der Mobilkommunikation, Symposium Bundesministerium Für Bildung Und Forschung, 2001.

Mengesha, Seble, Holger Karl, and Adam Wolisz. “Improving Goodput by Relaying in Transmission-Power-Limited Wireless Systems.” In GI Jahrestagung (1), 537--544, 2001.