Sequence Analysis of the Haemagglutinin Genes of Ten H9N2 Subtype Avian Influenza Viruses
LIU Yan-yun, LIU Chun-guo, WANG Shou-shan, ZHANG Chao-lin, WANG Wei, LV Rang, LIU Ming
China Animal Husbandry & Veterinary Medicine . 2013, (8): 13 -19 .