File:Radchenko, A.G., Perkovsky, E.E. et al. 2021. Formica species in late Eocene Rovno amber (10.3897@jhr.82.64599).pdf

Summary
Radchenko, A.G., Perkovsky, E.E., Vasilenko, D.V. 2021. Formica species (Hymenoptera, Formicidae, Formicinae) in late Eocene Rovno amber. Journal of Hymenoptera Research 82, 237–251.