Tadashi Nobuchi, Sirirat Janmahasatien, and Masaharu Sakai. “Seasonal Changes of Wood Formation and Some Characteristics of Heartwood Formation in Teak (Tectona Grandis L.) Plantation”. Agriculture and Natural Resources, vol. 30, no. 2, June 1996, pp. 254-63, https://li01.tci-thaijo.org/index.php/anres/article/view/241155.