Specifying and Analyzing Virtual Network Services Using Queuing Petri Nets
S.B. Schneider, A. Sharma, H. Karl, H. Wehrheim, in: 2019 IFIP/IEEE International Symposium on Integrated Network Management (IM), IFIP, Washington, DC, USA, 2019, pp. 116--124.

Specification, Composition, and Placement of Network Services with Flexible Structures
S. Dräxler, H. Karl, International Journal of Network Management (2017) 1--16.

SONATA: Service programming and orchestration for virtualized software networks
S. Dräxler, H. Karl, M. Peuster, H. Razzaghi Kouchaksaraei, M. Bredel, J. Lessmann, T. Soenen, W. Tavernier, S. Mendel-Brin, G. Xilouris, in: 2017 IEEE International Conference on Communications Workshops (ICC Workshops), IEEE, 2017.

A flexible multi-pop infrastructure emulator for carrier-grade MANO systems
M. Peuster, S. Dräxler, H. Razzaghi Kouchaksaraei, S. van Rossem, W. Tavernier, H. Karl, in: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 2017, pp. 1--3.

Joint Optimization of Scaling and Placement of Virtual Network Services
S. Dräxler, H. Karl, Z.A. Mann, in: Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017.

Profile Your Chains, Not Functions. Automated Network Service Profiling in DevOps Environments
M. Peuster, H. Karl, in: IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN), Berlin, 2017.

Understand Your Chains: Towards Performance Profile-Based Network Service Management
M. Peuster, H. Karl, in: Fifth European Workshop on Software-Defined Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016, 2016, pp. 7--12.

MeDICINE: Rapid Prototyping of Production-Ready Network Services in Multi-PoP Environments
M. Peuster, H. Karl, S. van Rossem, in: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN), 2016.

Monitoring and debugging using an SDK for NFV-powered telecom applications
S. v. Rossem, W. Tavernier, M. Peuster, D. Colle, M. Pickavet, P. Demeester, in: Proc. IEEE Conference on Network Function Virtualization and Software Defined Network (NFV-SDN), Demo Track, 2016.

Placement of Services with Flexible Structures Specified by a YANG Data Model
S. Dräxler, H. Karl, in: Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft), 2016, pp. 184--192.