Fernández, I., Pérez-Ventura, L., González-Prieto, S. J., & Cabaneiro, A. (2006). Soil d13C and d15N as a good indicator for predicting the site index of Galician pine forests (Pinus pinaster Ait. and Pinus sylvestris L.). Forest Systems, 15(1), 3-13. https://doi.org/10.5424/srf/2006151-00949