[1]
V. Vikberg and M. Koponen, “Contribution to the taxonomy of the Palaearctic species of the genus <i>Laelius</i> Ashmead, mainly from Finland and Sweden (Hymenoptera: Chrysidoidea: Bethylidae)”, Entomol. Fennica, vol. 16, no. 1, pp. 23–50, Jan. 2005.