M. Toranzo,  J.F.B. Castro,  E. Mello. 

Many contributions concerned with software quality (DoD-2167A, ISO 9000-3 and Capability Maturity Model) mandate that requirements traceability be practiced. However, they do not provide a model of what information should be captures and used as a part of requirements traceability model. This paper provides an framework to improve the requirements traceability

http://wer.inf.puc-rio.br/WERpapers/artigos/artigos_WER02/toranzo.pdf

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