Relationships of human and avian influenza A (H2) viruses detected by mathematical processing of data on the antigenic structure of hemagglutinin
Journal article published in 1991 by
E. A. Govorkova 
,
V. M. Kibardin,
A. A. Kizina,
G. M. Nazarova,
A. Smirnov Y.-U.
,
V. M. Kibardin,
A. A. Kizina,
G. M. Nazarova,
A. Smirnov Y.-U.
