Kuznetsov, N.N. 1966 Coccid-pests of conifers.. Zashchita Rastenii. Leningrad 11: 46-47.

Notes: Discussion of five important pest species; distribution; biology of Leucaspis pusilla, Syngenaspis parlatoriae, Carulaspis minima, Physokermes piceae, and Nemolecanium abietis.