RUŽEVIČIUS, Juozas. Quality Management Subsystems and their Impact on Business Competitiveness. Ekonomika, [S. l.], v. 71, p. 77–89, 2005. DOI: 10.15388/Ekon.2005.17525. Disponível em: https://www.zurnalai.vu.lt/ekonomika/article/view/17525. Acesso em: 11 may. 2025.