PODVEZKO, Valentinas. Comprehensive evaluation of complex quantities. Business: Theory and Practice, [S. l.], v. 9, n. 3, p. 160–168, 2008. DOI: 10.3846/1648-0627.2008.9.160-168. Disponível em: https://journals.vilniustech.lt/index.php/BTP/article/view/9107. Acesso em: 25 jun. 2025.