@conference{Sch06,
	address = {Sonthofen, Germany},
	author = {Schaffrath, Gregor},
	howpublished = {Research Group Retreat},
	month = {mar},
	title = {Network Intrusion Detection Systems \& Encryption: Friends or Foes?},
	url = {http://www.csg.uzh.ch/publications/nidsenc-fof.pdf},
	year = {2006}
}