1. Alekseev, V.I., Bukejs, A., and Balalaikins, M., “Contributions to the Knowledge of Beetles (Insecta: Coleoptera) in the Kaliningrad Region. 3,” Zoology and Ecology 22 (2), 99–110 (2012). https://doi.org/10.1080/21658005.2012.698043.
2. Aysal, T. and Kivan, M., “Occurrence of an Invasive Alien Species Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) in Turkey,” Türkiye Entomoloji Bülteni 4 (3), 141–146 (2014).
3. Belyakova, N.A. and Reznik, S.Ya., “First Record of the Harlequin Ladybird, Harmonia axyridis, in the Caucasus,” European Journal of Entomology 110 (4), 699–702 (2013).
4. Blekhman, A.V., Zakharov, I.A., and Goryacheva, I.I., “Intraspecific Differentiation in Harmonia axyridis Pall. by a Complex of Morphological Polymorphic Features and Variability of Mitochondrial Gene COI,” Vestnik Moskovskogo Universiteta, Seriya 16. Biologiya, No. 4, 50–53 (2010).
5. Doyle, J.J. and Doyle, J.L., “A Rapid DNA Isolation Procedure for Small Quantities of Fresh Leaf Tissue,” Phytochemical Bulletin 19, 11–15 (1987).