1. Abbott, E. V. and J. W. Ingram: Transmission of chlotoric streak of sugar cane by the leafhopper, Draeculacephala portola. Phytopathology. 32, 99–100 (1942).
2. Allard, H. A.: The mosaic disease of tobacco. U. S. Dept. Agric. Bul. 40 (1914).
3. Amos, J., R. G. Hatton, R. C. Knight and A. M. Massee: Experiments in the transmission of reversion in black currants. Ann. Rep. E. Mailing Res. Sta. 11, 126–150 (1927).
4. Anderson, C. W.: The insect vector relationship of the filaree red-leaf virus, with special reference to a latent-period difference between nymphs and adults in Macrosiphum geranicola (Lambers). Phytopathology. 41, 699–708 (1951).
5. Ball, E. D.: The leafhoppers of the sugar beet and their relation to the curly-top condition. U. S. Dept. Agric. Entom. Bul. 66, 33–52 (1909).