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 (Sep. 2007), 502–513.