SPIEWOK, W. Semantische Konsequenzen morphologischer Dubletten beim deutschen Substantiv. Kalbotyra, [S. l.], v. 26, n. 3, p. 125–135, 1975. DOI: 10.15388/Knygotyra.1975.20719. Disponível em: https://www.zurnalai.vu.lt/kalbotyra/article/view/20719. Acesso em: 9 may. 2025.