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Ruigrok, R W., N G. Wrigley, L J. Calder, S. Cusack, S A. Wharton, E B. Brown, a J J. Skehel. Electron Microscopy of the Low PH Structure of Influenza Virus Haemagglutinin. 1986.

Ruigrok, R W., et al. Electron Microscopy of the Low PH Structure of Influenza Virus Haemagglutinin. 1986.