CHEOSUWAN, T.; SAIPANYA, S.; TONGPHET, S. The improvement of a quality assurance information systems Based Six-Sigma Principles. ECTI Transactions on Computer and Information Technology (ECTI-CIT), [S. l.], v. 11, n. 1, p. 20–27, 2017. DOI: 10.37936/ecti-cit.2017111.66571. Disponível em: https://ph01.tci-thaijo.org/index.php/ecticit/article/view/66571. Acesso em: 4 may. 2024.