BEDJANIČ, Matjaž; PIRNAT, Alja; ŠALAMUN, Ali. A contribution to the knowledge of the dragonfly fauna of broader area along Drava R. between Ptuj and Središče ob Dravi. Natura Sloveniae, Ljubljana, SI, v. 1, n. 1, p. 45–70, 1999. DOI: 10.14720/ns.1.1.45-70. Disponível em: https://journals.uni-lj.si/NaturaSloveniae/article/view/17004. Acesso em: 10 jul. 2025.