Sihvonen, P. and Mikkola, K. 2002. Taxonomical characters of <i>Selidosema plumarium</i> and <i>S. brunnearium</i> (Lepidoptera: Geometridae: Ennominae) and the function of the internal genitalia during copulation. Entomologica Fennica. 13, 1 (Jan. 2002), 13–19. DOI:https://doi.org/10.33338/ef.84132.