1. New antigen-antibody system in Australia-antigen positive hepatitis;Almeida;Lancet,1971
2. Immune electron microscopy of the Australia-SH (serum hepatitis) antigen;Almeida;Microbios,1969
3. Health-care workers positive for hepatitis B surface antigen. Are their contacts at risk?;Alter;New Engl. J. Med.,1975
4. Incidenza della virus epatite in rapporto a prestazioni stomatologiche;D'Angelo;Ann. Stomatol.,1964
5. Transmission of serum hepatitis;Barker;JAMA,1970