Zhou Y, Kong Y, Sha J, Zeng L, Wang H, Wu R, Liu K. Catch Up or Fall Behind on Eco-Efficiency: Insight from Convergence Analysis. Chemical Engineering Transactions [Internet]. 1Aug.2020 [cited 19Apr.2024];81:409-14. Available from: https://www.cetjournal.it/index.php/cet/article/view/CET2081069