Auksorn Klaewklad, Korakot Nakkanong, Chatchamon Daengkanit Nathaworn and Charassri Nualsri. “RUBBER ELONGATION FACTOR (REF) AND SMALL RUBBER PARTICLE PROTEIN (SRPP) GENE EXPRESSION RESPONSES TO VARIATION OF SEASONAL CHANGE IN FOUR SELECTED RUBBER CLONES”. Pakistan Journal of Biotechnology, vol. 14, no. 1, Jan. 2017, pp. 115-20, https://pjbt.org/index.php/pjbt/article/view/735.