1. Reactions to concentrated influenza virus vaccines;Salk;J Immunol,1948
2. Purification of large quantities of influenza virus by density gradient centrifugation;Reimer;J Virol,1967
3. The effect of nonaqueous solvents on the quarternary structure of viruses: a procedure for the simultaneous concentration, purification and disruption of influenza viruses;Neurath;Microbios,1971
4. Purified influenza virus vaccine;Peck,1968
5. A new subunit influenza vaccine: acceptability compared with standard vaccines and effect of dose on antigenicity;Ruben;J Infect Dis,1972