References

Rizzetto, M., Canese, M.G., Arico, S., Crivelli, O., Bonino, F., Trepo, C.G. and Verme, G. (1977). Immunofluorescence detection of a new antigen-antibody system (/anti-) associated to hepatitis B virus in liver and serum of HBsAg carriers. Gut., 18, 977-1003.

Taylor, J.M. (1996). Hepatitis delta virus and its replication. In Fields, B.N., et al. (Eds). “Virology” 3rd Edn. Lippincott-Raven, Philadelphia, pp. 2809-2818.