References
David White and Frank Fenner. Medical Virology, 4th edition, Academic Press, San Diego: 1994.
Bernard Fields and D.M. Knipe et al. Virology, 3rd edition, Lippincott-Raven, Philadelphia: 1996, pp2739-2789.
http://www.globalserve.net/~harlequin/HBV/
http://www.cdc.gov/ncidod/diseases/hepatitis/hepbfact.htm
http://www.urmc.rochester.edu/smd/mbi/grad2/hbv97.html
http://www.stanford.edu/group/virus/hepadna/index.html