Ben-Dov, Y. & Hodgson, C. J. 1997. World Crop Pests, Volume 7B. Soft Scale Insects – Their Biology, Natural Enemies and Control. Amsterdam, Elsevier.
Helsen, H. H. M., Blommers, L. H. M. & Trapman, M. C. 1996. Timing observation and control of mussel scale Lepidosaphes ulmi. IOBC wprs Bulletin 19(4), 145-149.
Kosztarab, M. & Kozar, F. 1988. Scale insects of central Europe. Akademiai Kiado, Budapest, 456 ppRosen, D. 1990. World Crop Pests, Volume 4B. Armored Scale Insects – Their Biology, Natural Enemies and Control. Amsterdam, Elsevier.