1. Chen, E.: Detecting DoS attacks on SIP systems. In: Proc. of VoIP Management and Security (2006)
2. Computer Engineering Laboratory, University of Oulu: PROTOS Test-Suite:c07-sip (2005). URL http://www.ee.oulu.fi/research/ouspg/protos/testing/c07/sip/index.html
3. Geneiatakis, D., Kambourakis, G., Dagiuklas, T., Lambrinoudakis, C., Gritzalis, S.: A framework for detecting malformed messages in SIP networks. In: Proc. of Local and Metropolitan Area Networks (LANMAN) (2005)
4. Handley, M., Jacobson, V.: RFC2327: Session description protocol (SDP) (1998)
5. Hung, P., Vargas Martin, M.: Security issues in VoIP applications. In: Proc. of Electrical and Computer Engineering, Canadian Conference (2006)