ČASAS, Ramūnas. The Sources of Competitive Advantage in Modern Business Theories. Ekonomika, [S. l.], v. 52, p. 22–35, 2000. DOI: 10.15388/Ekon.2000.16910. Disponível em: https://www.zurnalai.vu.lt/ekonomika/article/view/16910. Acesso em: 3 may. 2025.