Coopman, R. E., J. C. Jara, R. Escobar, L. J. Corcuera, and L. A. Bravo. “Genotypic Variation in Morphology and Freezing Resistance of Eucalyptus Globulus Seedlings Subjected to Drought Hardening in Nursery”. Electronic Journal of Biotechnology, vol. 13, no. 1, Jan. 2010, pp. 0-0, https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v13n1-10.