Hernandez, J. G., E. Gonzalez-Ferreiro, A. Sarmento, J. Silva, A. Nunes, A. C. Correia, L. Fontes, M. Tomé, and R. Diaz-Varela. “Short Communication. Using High Resolution UAV Imagery to Estimate Tree Variables in Pinus Pinea Plantation in Portugal”. Forest Systems, Vol. 25, no. 2, July 2016, p. eSC09, doi:10.5424/fs/2016252-08895.