L. M. Gonçalves, B. D. S. Barbosa, G. A. e S. Ferraz, D. T. Maciel, and H. F. D. Santos, “SPACE AND TEMPORARY VARIABILITY OF THE INDEX VEGETATION APPLIED TO IMAGES OBTAINED BY A REMOTELY PILOTED AIRCRAF”, Braz J Biosyst Eng, vol. 11, no. 4, pp. 340–349, Dec. 2017.