RADOJKO. EVALUATION OF TRADE EFFICIENCY IN SERBIA BASED ON DEA SUPER-RADIAL METHOD. Poslovna ekonomija, [S. l.], v. 23, n. 1, p. 1–20, 2023. DOI: 10.5937/poseko23-42860. Dostupno na: https://asistent.ceon.rs/index.php/poseko/article/view/42860. Pristupljeno: 12 jul. 2026.