1. Alter, H.J., Holland, P., Purcell, R.H., Popper, H.: Transmissible agent in non-A-non-B hepatitis. Lancet 1, 459?463 (1978)
2. Altmann, H.-W.: Die Histologie der akuten Virushepatitis. In: Die akute Hepatitis, Wannagat, L. (ed.), pp. 41?61. Stuttgart: Georg Thieme 1971
3. Barker, L.F., Chisari, F.V., McGrath, P.P., Dalgard, D.W., Kirschstein, R.L., Almeida, J.D., Edgington, T.S., Sharp, D.G., Peterson, M.R.: Transmission of type-B viral hepatitis to chimpanzees. J. Infect. Dis. 127, 648?662 (1973)
4. Berman, M., Alter, H.J., Ishak, K.G., Purcell, R.H., Jones, E.A.: The chronic sequelae of non-A, non-B hepatitis. Ann. Intern. Med. 91, 1?6 (1979)
5. Bianchi, L., Gudat, F.: Immunopathology of hepatitis B. In: Progress in liver diseases, Popper, H., Schaffner, F. (eds.), Volume VI, pp. 371?392. New York: Grune & Stratton 1979