Srisuphanunt, M., K. Nantiruj, and P. Sadee. “Anti-Sm and Anti-RNP Detection by Passive Hemagglutination and Counter Immunoelectrophoresis”. Srinagarind Medical Journal, vol. 10, no. 3, Nov. 2013, pp. 113-24, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13785.