* 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.
* Clark SM, LeDoux DG, Seeno TN, Riley EG, Gilbert AJ, Sullivan JM (2004) Host plants of leaf beetle species occurring in the United States and Canada (Coleoptera: Megalopodidae, Orsodacnidae, Chrysomelidae, excluding Bruchinae). Coleopterists Society, Special Publication 2, 615 pp.
------- Adult host.
* Garibaldi A, Bertetti D, Gilardi G, Saracco P (2009) [Two new bacterial pathogens on ornamentals in Italy]. Protezione delle Colture no. 2, p 60 (in Italian).
* Parrella G, Gognalons P, Gebre-Selassie K, Vovlas C, Marchoux G (2003) An update of the host range of tomato spotted wilt virus. Journal of Plant Pathology 85(4), 227-264.
------- As Verbena hybrida.
* Singh RP, Dilworth AD, Baranwal VK, Gupta KN (2006) Detection of Citrus exocortis viroid, Iresine viroid, and Tomato chlorotic dwarf viroid in new ornamental host plants in India. Plant Disease 90(11), p 1457.
* Verhoeven JTJ, Jansen CCC, Roenhorst JW (2007) First report of pospiviroids infecting ornamentals in the Netherlands: Citrus exocortis viroid in Verbena sp., Potato spindle tuber viroid in Burgmansia suaveloens and Solanum jasminoides, and Tomato apical stunt viroid in Cestrum sp. New Disease Reports Volume 15 (February – July). http://www.bspp.org.uk/ndr/july2007/2007-13.asp
