LIPIŃSKA, Danuta. The Water‑wastewater‑sludge Sector and the Circular Economy. Comparative Economic Research. Central and Eastern Europe, [S. l.], v. 21, n. 4, p. 121–137, 2018. DOI: 10.2478/cer-2018-0030. Disponível em: https://www.czasopisma.uni.lodz.pl/CER/article/view/3883. Acesso em: 8 dec. 2025.