TY  - BOOK
AU  - Webster,R.G.
AU  - Laver,W.G.
AU  - Air,G.M.
AU  - Schild,G.C.
TI  - Molecular mechanisms of variation in influenza viruses
UR  - https://drive.google.com/file/d/1RMYfWdty_SCimmMnRWT8sJ1vimvTG-Vf/view?usp=drivesdk
ER  -