Ortuño Perez, S. F., F. Garcia-Robredo, E. Ayuga Tellez, and C. Fullana Belda. 2013. “Effects of the Crisis in the Resin Sector on the Demography of Rural Municipalities in Spain”. Forest Systems 22 (1), 39-46. https://doi.org/10.5424/fs/2013221-02403.