Tsalev, M. 1968 Contribution to the scale insect fauna (Homoptera, Coccoidea) of the park and ornamental plants in Bulgaria.. Bulletin of the Institute of Zoology and Museum, Acad. Bulg. Sci. 28: 205-218.

Notes: Title in German: [Beitrag uber die erforschung der schildlausefauna (Homoptera, Coccoidea) der park und zierpflanzen in Bulgarien]. Lists 89 species in eight families; first record for 55 species; hosts.