1. Allen, T. C., 1972: Bacilliform particles within asters infected with a western strain of aster yellows. Virology47, 491?493.
2. Chen, M. H., andC. Hiruki, 1975: Electron microscopy of mycoplasma-like bodies associated with clover proliferation disease. Proc. Amer. Phytopath. Soc.2, 52.
3. ? ?, 1976: Effects of dark treatment on the ultrastructure of the aster yellows agent in situ. Phytopathology67, 321?324.
4. ?,T. Miyakawa, andC. Matsui, 1972: Heterogeneous distribution of mycoplasma-like bodies in likubin-diseased Ponkan citrus. Ann. Phytopathol. Soc. Japan38, 215?216.
5. Giannotti, J., G. Devauchelle, C. Vago, andG. Marchoux, 1973: Rodshaped virus-like particles associated with degenerating Mycoplasma in plant and insect vector. Ann. Phytopath.5, 461?465.