Bogush, P. “Morphological, Colour and Behavioural Mimicry of Cuckoo Bees by the Hoverfly Eumerus Tricolor (Fabricius) (Diptera: Syrphidae)”. Entomologica Fennica, vol. 27, no. 3, Oct. 2016, pp. 133-8, doi:10.33338/ef.59459.