JEVSEJEVA, S.; PROLS, J.; CUDEČKIS, V. Waste Generation in the Riga City and Their Composition. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 132–138, 2006. DOI: 10.17770/etr2003vol1.1998. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/1998.. Acesso em: 4 may. 2024.