1. an evolutionary tree relating eight alphaviruses based on amino terminal sequences of their glycoproteins;Bell,1984
2. International Catalogue of Arboviruses Including Certain Other Viruses of Vertebrates;Berge,1975
3. Arbovirus serogroups: Definition and geographic distribution;Calisher,1988
4. Proposed antigenic classification of registered arboviruses. I. Togaviridae, Alphavirus;Calisher;Intervirology,1980
5. Epidemiology of arthropod-borne togaviruses: The role of arthropods as hosts and vectors and of vertebrate hosts in natural transmission cycles;Chamberlain,1980