1. Emeljanov, A.F., “On the Problem of Classification and Phylogeny of the Family Delphacidae (Homoptera, Cicadina), with the Larval Characters Taken into Account,” Entomol. Obozr. 74(4), 780–794 (1995).
2. Fennah, R.G., “A New Genus and Species of Ricaniidae from Palaeocene Deposits in North Dakota,” J. Nat. Hist. 2(1), 143–146 (1968).
3. Fennah, R.G., “A Tribal Classification of the Tropiduchidae (Homoptera: Fulgoroidea), with the Description of a New Species on Tea in Malaysia,” Bull. Entomol. Res. 72(4), 631–643 (1982).
4. Gnezdilov, V.M., “A Review of the Family Issidae (Homoptera, Cicadina) of the European Fauna, with Notes on the Structure of the Ovipositor in Fulgoroid Planthoppers,” in Lectures in the Memory of N.A. Kholodkovskii (St. Petersburg, 2003), Issue 56, Part 1, pp. 1–145.
5. Melichar, L., “Monographie der Issiden (Homoptera),” Abh. K. K. Zool.-bot. Ges. Wien. 3(4), 1–327 (1906).