RAUBA, Ewa. The analysis of tariffs for collective sewage treatment services in the cities of the warmińsko-mazurskie voivodeship . Economics and Environment, Poland, v. 67, n. 4, p. 13, 2018. Disponível em: https://ekonomiaisrodowisko.pl/journal/article/view/125.. Acesso em: 3 apr. 2025.