LI, L.- juan; ZHENG, H.- xing. Environmental and ecological water requirements of a river system : a case study of the Haihe-Luanhe River system. Cuadernos de Investigación Geográfica, Logroño, SPA, v. 28, p. 127–136, 2013. DOI: 10.18172/cig.1132. Disponível em: https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/1132. Acesso em: 5 may. 2024.