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Helen Roy, Alain Migeon. 2010.
Ladybeetles (Coccinellidae).
Chapter 8.4 in:
A. Roques et al. (Eds). Alien terrestrial arthropods of Europe.
BioRisk, 2010, 4(1): 293-313.
A peer-reviewed open-access journal.
doi: 10.3897/biorisk.4.49
www.pensoftonline.net/biorisk