B. Boehm, J. Brown, и M. Lipow. International Conference on Software Engineering, стр. 592--605. San Francisco, IEEE Computer Society Press, (1976)Later published as ``Characteristics of Software Quality'', TRW series on technology, North-Holland, 1978.
J. Krogstie. Organizational Semiotics: Evolving a Science of Information Systems, IFIP TC8 / WG8.1 Working Conference on Organizational Semiotics: Evolving a Science of Information Systems, стр. 231-249. Montreal, (июля 2001)