Sheldeshova, G.G. 1972 The importance of frost resistance in coccids (Homoptera, Coccoidea).. Problemy Fotoperiodizma i Diapauzy Nasekomykh (1972): 51-74.

Notes: Role of cold resistance in distribution of the Coccidae (Homoptera, Coccoidea). Species mentioned include Chionaspis salicis, Lepidosaphes ulmi, Eulecanium caraganae, Phenococcus aceris and Kermococcus quercus.