1. Bald, J. G. and N. H. White. 1942. Potato virus X: The average severity of strain mixtures in three varieties of potato. Jour. Coun. Sci. Industr. Res. Aust. 15:300–306.
2. Bawden, F. C., B. Kassanis and F. M. Roberts. 1948. Studies on the importance and control of potato virus X. Ann. Appl. Biol. 35:250–265.
3. Burnett, Grover and Leon K. Jones. 1931. The effect of certain potato and tobacco viruses on tomato plants. Wash. Agr. Exp. Sta. Bull. 259.
4. Clinch, Phyllis E. M. 1944. Observations on a severe strain of potato virus X. Sci. Proc. Roy. Dublin Soc. N. S. 23:273–299.
5. David, Elisabeth and Inge Stornier. 1941.Capsicum annuum als testpflanze fur einige kartoffelviren. Phytopath. Z. 13:532–538.