A. Malik and B. Boehm.
"An Empirical Study of Requirements Elaboration", in <em>Anais do XXII Simpósio Brasileiro de Engenharia de Software</em>, Campinas, 2008, pp. 113-123, doi: <a href="https://doi.org/10.5753/sbes.2008.21327">https://doi.org/10.5753/sbes.2008.21327</a>.