Pissawan Chiemsombat, Supat Attathom, Wichai Kositratana, Thira Sutabutra, and Nuchnard Sae-Ung, “Cloning of PCR-Amplified Coat Protein Gene of Tomato Yellow Leaf Curl Virus”, Agr. Nat. Resour., vol. 26, no. 5, pp. 1–5, Dec. 1992.