Aucique-Perez, C. E., E. Daza, R. Ávila-Diazgranados, and H. Romero. “Chlorophyll a Fluorescence and Leaf Temperature Are Early Indicators of Oil Palm Diseases”. Scientia Agricola, Vol. 77, no. 2, Apr. 2020, p. e20180106, doi:10.1590/1678-992x-2018-0106.