* Riggs RD, Hamblen ML (1966) Further studies on the host range of the soybean-cyst. Bulletin of the Agricultural Experiment Station no. 718. University of Arkansas, Fayetteville (US), 19 pp.
------- Host range experiments.
* Nielson MW (1968) The leafhopper vectors of phytopathogenic viruses (Homoptera, Cicadellidae). Taxonomy, biology and virus transmission. Technical Bulletin No. 1392. USDA Agricultural Research Service. 386 pp.
------- reported as food plant by DeLong and Severin (1949).