Prachayasittikul, V., C. Isarankura Na Ayudhya, M. Mejare, and L. Bulow. “Construction of a Chimeric Histidine6-Green Fluorescent Protein: Role of Metal on Fluorescent Characteristic”. Science & Technology Asia, vol. 5, no. 1, Nov. 2015, pp. 61-68, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41926.