Cabal, A., A. Kidelman, U. Ortega, M. Duñabeitia, and J. Majada. “Influence of Chemical Prunning on Biomass and Root System Development in Pinus Pinaster Ait. And Pinus Radiata D. Don”. Forest Systems, Vol. 14, no. 1, Apr. 2005, pp. 52-63, doi:10.5424/srf/2005141-00873.