BUKEJS, A.; ALEKSEEV, V. I.; JÄCH, M. A. The riffle beetles (Coleoptera: Elmidae) of the Eocene Baltic amber: Heterelmis groehni sp. nov. and Heterlimnius samlandicus (Bollow, 1940) comb. nov. Zootaxa, Auckland, New Zealand, v. 3986, n. 4, p. 452–460, 2015. DOI: 10.11646/zootaxa.3986.4.4. Disponível em: https://www.mapress.com/zt/article/view/zootaxa.3986.4.4. Acesso em: 3 may. 2025.