Toro-Mujica, P. M., Aguilar, C., Vera, R., Barba, C., Rivas, J., & García-Martínez, A. (2015). Changes in the pastoral sheep systems of semi-arid Mediterranean areas: association with common agricultural policy reform and implications for sustainability. Spanish Journal of Agricultural Research, 13(2), e0102. https://doi.org/10.5424/sjar/2015132-6984