* 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.
* Goodey JB, Franklin MT, Hooper DJ (1965) T. Goodey's: The Nematode Parasites of Plants Catalogued Under Their Hosts. Commonwealth Agricultural Bureaux, Farnham Royal, Bucks, England. Third edition, 214 pp.