Further reading: Hepadnaviridae
Drexler, J. F., A. Geipel, A. König, V. M. Corman, D. van Riel, L. M. Leijten, C. M. Bremer, A. Rasche, V. M. Cottontail, G. D. Maganga, M. Schlegel, M. A. Müller, A. Adam, S. M. Klose, A. J. Carneiro, A. Stöcker, C. R. Franke, F. Gloza-Rausch, J. Geyer, A. Annan, Y. Adu-Sarkodie, S. Oppong, T. Binger, P. Vallo, M. Tschapka, R. G. Ulrich, W. H. Gerlich, E. Leroy, T. Kuiken, D. Glebe and C. Drosten (2013). Bats carry pathogenic hepadnaviruses antigenically related to hepatitis B virus and capable of infecting human hepatocytes. Proc Natl Acad Sci USA 110: 16151-16156. [PubMed]
Ganem, D. and R. J. Schneider (2001). Hepadnaviridae: The viruses and their replication. In Fields Virology 4th Edition, pp. 2923-2969. Edited by D. M. Knipe & P. M. Howley. Philadelphia: Lippincott, Williams & Wilkins.
Grethe, S., J. O. Heckel, W. Rietschel and F. T. Hufert (2000). Molecular epidemiology of hepatitis B virus variants in nonhuman primates. J Virol 74: 5377-5381. [PubMed]
Hollinger, F. B. and T. J. Liang (2001). Hepatitis B virus. In Fields Virology 4th Edition, pp. 2971-3036. Edited by D. M. Knipe & P. M. Howley. Philadelphia: Lippincott, Williams & Wilkins.
Kann, M. and W. H. Gerlich (1998). Hepatitis B. In Topley and Wilson's Microbiology and Microbial Infections, 9th Edition, pp. 745-774. Edited by L. Collier, A. Balows & M. Sussman. London: Arnold.
Liang, T. J. (2009). Hepatitis B: the virus and disease. Hepatology 49: S13-21. [PubMed]
Nassal, M. (2008). Hepatitis B viruses: reverse transcription a different way. Virus Res 134: 235-249. [PubMed]
Newbold, J. E., H. Xin, M. Tencza, G. Sherman, J. Dean, S. Bowden and S. Locarnini (1995). The covalently closed duplex form of the hepadnavirus genome exists in situ as a heterogeneous population of viral minichromosomes. J Virol 69: 3350-3357. [PubMed]
Norder, H., A. M. Courouce and L. O. Magnius (1992). Molecular basis of hepatitis B virus serotype variations within the four major subtypes. J Gen Virol 73: 3141-3145. [PubMed]
Prassolov, A., H. Hohenberg, T. Kalinina, C. Schneider, L. Cova, O. Krone, K. Frölich, H. Will and H. Sirma (2003). New hepatitis B virus of cranes that has an unexpected broad host range. J Virol 77: 1964-1976. [PubMed]
Schaefer, S. (2007). Hepatitis B virus taxonomy and hepatitis B virus genotypes. World J Gastroenterol 13: 14-21. [PubMed]