Lindblom, A. 1938 [Pests of Sweden.] Skadedjur i Sverige ar.. Statens Vaxtskyddsanstalt 26: 1-102.

Notes: Total pages numbers approximate; mentions Lepidosaphes ulmi, Eulecanium corni, Aspidiotus hederae, Gossyparia spuria and Asterolecanium variolosum.