GINEVIČIUS, Romualdas. Some problems of quantitative evaluation of the state of social-economic systems. Business: Theory and Practice, [S. l.], v. 10, n. 2, p. 69–83, 2009. DOI: 10.3846/1648-0627.2009.10.69-83. Disponível em: https://journals.vilniustech.lt/index.php/BTP/article/view/9020. Acesso em: 9 may. 2025.