Lobo, J.M., Guéorguiev, B.V. and Chehlarov, E.I. 2011. The species of <i>Scarabaeus</i> Linnaeus (Coleoptera: Scarabaeidae) in Bulgaria and adjacent regions: faunal review and potential distribution. Entomologica Fennica. 21, 4 (Feb. 2011), 202–220. DOI:https://doi.org/10.33338/ef.3932.