Kriangkrai Witoonsatian, Theera Rukkwamsuk, Thaweesak Songserm, and Theerapol Sirinarumitr. 2007. “Cloning and Expression of HA Gene from a Highly Pathogenic Avian Influenza Isolate (H5N1) in Thailand”. Agriculture and Natural Resources 41 (3). Bangkok, Thailand:502-13. https://li01.tci-thaijo.org/index.php/anres/article/view/244273.