Fernández, M.E., J.E. Gyenge, M.M. de Urquiza, and S. Varela. 2012. “Adaptability to Climate Change in Forestry Species: Drought Effects on Growth and Wood Anatomy of Ponderosa Pines Growing at Different Competition Levels”. Forest Systems 21 (1), 162-74. https://doi.org/10.5424/fs/2112211-12586.