Principles of situational systems engineering. Mathematical Machines and Systems, [S. l.], n. 4, p. 65–78, 2019. DOI: 10.34121/1028-9763-2019-4-65-78. Disponível em: https://www.j-mms.de/index.php/mms/article/view/2019-4-a6. Acesso em: 12 aug. 2026.