KOSZTIN, N. .; BALATONI , I. Regional differences in the economical sustainability of sports halls. Applied Studies in Agribusiness and Commerce, [S. l.], v. 10, n. 4-5, p. 85–91, 2016. DOI: 10.19041/APSTRACT/2016/4-5/11. Disponível em: https://ojs.lib.unideb.hu/apstract/article/view/6892. Acesso em: 20 may. 2022.