LYDEKA, Zigmas; KAVALIAUSKAS, Justas. Efficiency Differences of Entrepreneurial Activity and Competition Forms. Ekonomika, [S. l.], v. 61, p. 88–99, 2003. DOI: 10.15388/Ekon.2003.23211. Disponível em: https://www.zurnalai.vu.lt/ekonomika/article/view/23211. Acesso em: 20 apr. 2025.