Non-Parametric Analysis of Retailer Performance in Selected EU Countries: Assessing the Impact of COVID-19. Studia Universitatis Vasile Goldiș Arad, Seria Științe Economice, [S. l.], v. 35, n. 3, p. 39–68, 2025. Disponível em: https://publicatii.uvvg.ro/index.php/studiaeconomia/article/view/845. Acesso em: 15 apr. 2026.