GINEVIČIUS, Romualdas. Determining market concentration. Journal of Business Economics and Management, [S. l.], v. 8, n. 1, p. 3–10, 2007. DOI: 10.3846/16111699.2007.9636147. Disponível em: https://journals.vilniustech.lt/index.php/JBEM/article/view/7570. Acesso em: 26 may. 2025.