Pardos, M., Puértolas, J., Madrigal, G., Garriga, E., de Blas, S. and Calama, R. 2010. Seasonal changes in the physiological activity of regeneration under a natural light gradient in a Pinus pinea regular stand. Forest Systems. 19, 3 (Oct. 2010), 367-380. DOI:https://doi.org/10.5424/fs/2010193-9102.