ČOP, Bojan. Slav. * měd ь » Kupfer«. Linguistica, Ljubljana, SI, v. 3, n. 1, p. 27–32, 1958. DOI: 10.4312/linguistica.3.1.27-32. Disponível em: https://journals.uni-lj.si/linguistica/article/view/3859. Acesso em: 12 dec. 2024.