RIBIKAUSKAS, A.; VASILECAS, O.; ČAPLINSKAS, A. Conceptual models of the quality control process. Mathematical Modelling and Analysis, [S. l.], v. 5, n. 1, p. 143–152, 2000. DOI: 10.3846/13926292.2000.9637137. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9953. Acesso em: 9 may. 2025.