Álvarez, J., Venegas, R. and Pérez, C. 2004. The impact of duration and geometry of weed control in productivity of Pinus radiata plantations in five southern ecosystems of Chile. Bosque. 25, 2 (Aug. 2004), 57–67. DOI:https://doi.org/10.4067/s0717-92002004000200006.