Montero, G., J. A. Gomez, and C. Ortega. “Estimation of Aereal Productivity in Pinus Pinaster Plantations in Central Spain”. Forest Systems0, no. 1 (December 1, 1991): 191-202. Accessed May 3, 2024. https://fs.revistas.csic.es/index.php/fs/article/view/1306.