@Article{Giese&Wirtz2001b,
  AUTHOR = {Giese, Holger and Wirtz, Guido},
  TITLE = {{The OCoN Approach for Object-Oriented Distributed Software
  Systems Modeling}},
  YEAR = {2001},
  JOURNAL = {Computer Systems Science \& Engineering},
  VOLUME = {16},
  NUMBER = {3},
  PAGES = {157-172},
  URL = {Journal http://www.crlpublishing.co.uk/CSSE.htm},
  ABSTRACT = {There are many significant problems related to engineering
  distributed software systems that feature both control and data
  processing aspects. Besides software complexity, in general we
  also have to tackle issues of concurrency and distribution. A set of
  well-evolved formalisms particularly w.r.t. concurrency indeed exists,
  although the integration of such into a common software engineering
  framework is still lacking. Related attempts have often not achieved
  the desired level of acceptance. A fast growing market for distributed
  software does, however, effectuate a shift towards high-level behavior
  modeling. The OCoN approach as presented in this article provides
  such high-level behavior modeling as an extension to the UML de facto
  standard for object-oriented modeling by integrating an adjusted Petri
  net formalism with the software engineering reality.}
}