GINEVIČIUS, Romualdas; ČIRBA, Stasys. Additive measurement of market concentration. Journal of Business Economics and Management, [S. l.], v. 10, n. 3, p. 191–198, 2009. DOI: 10.3846/1611-1699.2009.10.191-198. Disponível em: https://journals.vilniustech.lt/index.php/JBEM/article/view/6231. Acesso em: 26 may. 2025.