1. Testing the safety and effectiveness of oral administration of a live influenza vaccine;Alexandrova;Bull WHO,1970
2. Occurrence of influenza specific antibodies in the lung after oral immunization in mice;Bergmann;Poumon Goeur,1982
3. Antibodies against influenza and stimulated macrophages in the lung lavage fluid of mice following oral immunization;Bergmann;Allerg. Immunol.,1983
4. Lung mechanics in orally immunized mice after aerolized exposure to influenza virus;Bergmann;Respiration,1984
5. Antibody in tears, saliva and nasal secretions following oral immunization of humans with inactivated influenza virus vaccine;Bergmann;Int. Arch. Allergy Appl. Technol.,1986