J. de la Fuente-Leon, E. Lafuente-Jimenez, D. Hermosilla, M. Broto-Cartagena, and A. Gasco, “Physico-mechanical properties of Spanish juniper wood considering the effect of heartwood formation and the presence of defects and imperfections”, For. syst., vol. 23, no. 1, pp. 64-71, Apr. 2014.