author = {Kurt Schneider and Kai Stapel and Eric Knauss},
  title = {{B}eyond {D}ocuments: {V}isualizing {I}nformal {C}ommunication},
  booktitle = {Proceedings of Third International Workshop on Requirements Engineering
	Visualization (REV '08)},
  year = {2008},
  address = {Barcelona, Spain},
  month = Nov,
  abstract = {Requirements engineering heavily relies on oral and informal communication
	like meetings, phone calls, and e-mails. Some requirements are traditionally
	communicated outside formal documents in many companies. Considering
	document-based communication only is, therefore, not sufficient.
	Communication beyond documents should be taken into account when
	a company wants to improve its requirements engineering practices.
	We present a notation for visualizing the flow of requirements, explicitly
	including both informal and document-based communication. An example
	illustrates the notation by applying it to eliciting and validating
	security requirements. We compare our visualization approach for
	flows of requirements to related notations. The comparison shows
	how differences in notations affect the ability to model essential
	concepts of our approach. Explicitly modeling flows beyond documents
	provides new opportunities for requirement awareness, process improvement
	and innovation of tools and techniques.}