Rakib, M.R.M., A.H. Borhan, and A.N. Jawahir. 2019. “The Relationship Between SPAD Chlorophyll and Disease Severity Index in Ganoderma-Infected Oil Palm Seedlings”. Journal of the Bangladesh Agricultural University 17 (3):355–358. https://jbau.bau.edu.bd/index.php/home/article/view/460.