A. N. CAHYO, R. H. MURTI, E. T. S. PUTRA, T. R. NURINGTYAS, D. FABRE, and P. MONTORO, “SPAD-502 and atLEAF CHL PLUS values provide good estimation of the chlorophyll content for Hevea brasiliensis Müll. Arg. Leaves”, MP, vol. 88, no. 1, May 2020.