Morphology of the GB hepatitis agent - ALMEIDA, J. D.; DEINHARDT, F.; HOLMES, A. W.; PETERSON, D. A.; WOLFE, L.; ZUCKERMAN, A. J. (Nature Publishing Group, 1976)
http://dx.doi.org/10.1038/261608a0
Keywords: W; V; WW-YZ; TA-TD; U