DRACHAL, Krzysztof. WHAT DO WE KNOW FROM EPRG MODEL?. Ecoforum Journal, [S. l.], v. 3, n. 2, p. 10, 2014. Disponível em: https://ecoforumjournal.ro/index.php/eco/article/view/2314. Acesso em: 21 nov. 2025.