Avila, A., Redondo, C., Mateo-Sagasta, E., & Tello, M. L. (2001). Spatial Distribution of Symptomatic Grapevines with Esca Disease in the Madrid Region (Spain). Phytopathologia Mediterranea, 40(4), 439–442. https://doi.org/10.14601/Phytopathol_Mediterr-1637