E. Ayuga-Téllez, M. L. Contato-Carol, C. García-Ventura, Álvaro Sánchez de Medina, M. Ángeles Grande-Ortiz, and C. González-García, “Obtaining unit values through the type-trees method for urban trees appraisal: application in Santiago del Estero (Argentina) and Madrid (Spain)”, BOSQUE, vol. 37, no. 1, pp. 53–62, May 2017.