De Juan Valero, J.A., M. Maturano, A. Artigao Ramírez, J.M. Tarjuelo Martín-Benito, and J.F. Ortega Álvarez. 2005. “Growth and Nitrogen Use Efficiency of Irrigated Maize in a Semiarid Region As Affected by Nitrogen Fertilization”. Spanish Journal of Agricultural Research 3 (1), 134-44. https://doi.org/10.5424/sjar/2005031-133.