PATCAS, Lucian; LAWFORD, Mark; MAIBAUM, Tom. From System Requirements to Software Requirements in the Four-Variable Model. Electronic Communications of the EASST, [S. l.], v. 66, 2014. DOI: 10.14279/tuj.eceasst.66.887. Disponível em: https://eceasst.org/index.php/eceasst/article/view/2099. Acesso em: 21 nov. 2024.