@TechReport{Allen92PFTR,
      AUTHOR = {Allen, Robert and Garlan, David},
      TITLE = {Towards Formalized Software Architectures},
      YEAR = {1992},
      MONTH = {July},
      KEY = {Allen},
      NUMBER = {CMU-CS-92-163},
      INSTITUTION = {Carnegie Mellon University, School of Computer Science},
      PS = {http://reports-archive.adm.cs.cmu.edu/anon/1992/CMU-CS-92-163.ps},
      ABSTRACT = {An important goal in software engineering is to describe complex software systems at an architectural level of abstraction. While there are many useful architectural paradigms (pipes, blackboards, etc.) they are typically understood only idiomatically and applied in an ad hoc fashion. We show how a formal model allows us to say precisely what we mean by a software architecture, explore its properties, and systematically describe instances of the architecture. We illustrate the approach using the well-known example of pipe-filter architectures.},
      KEYWORDS = {Formal Methods, Software Architecture}
}