Oliet, J., Planelles, R., Artero, F., Martínez Montes, E., Álvarez-Linarejos, L., Alejano, R. and López Arias, M. (2003) “Root growth potential in nursery Pinus halepensis Mill. seedlings. Fertilization effect”, Forest Systems, 12(1), pp. 51-60. doi: 10.5424/787.