Baldo, Francisco, et al. “Effect of the Regulation of Freshwater Inflow on the Physical-Chemical Characteristics of Water and on the Aquatic Macrofauna in the Guadalquivir Estuary”. Ciencias Marinas, vol. 31, no. 3, Mar. 2005, pp. 467-76, doi:10.7773/cm.v31i3.48.