1. Recombinant influenza-A viruses as live vaccines for man;Beare;Lancet,1971
2. Temperature-sensitive mutants of influenza virus;Murphy,1972
3. The use of genetic recombinants in preparing of influenza vaccine strains;Alexandrova;Vopr. Virusol.,1977
4. Obtaining of an additionally attenuated vaccinating cryophylic influenza strains;Alexandrova;Rev. Roum. Inframicrobiol.,1965
5. Biological and immunological characteristics of cold-adapted influenza virus;Maassab;J. Immunol.,1969