Davies, Luísa C., André M. Vilhena, Júlio M. Novais, and Susete Martins-Dias. 2004. “Olive Mill Wastewater Characteristics: Modelling and Statistical Analysis”. Grasas Y Aceites 55 (3):233-41. https://doi.org/10.3989/gya.2004.v55.i3.171.