HÄKKINEN, J. After the protolanguage: Invisible convergence, false divergence and boundary shift. Finnisch-Ugrische Forschungen, [S. l.], v. 2012, n. 61, p. 7–28, 2012. DOI: 10.33339/fuf.85674. Disponível em: https://journal.fi/fuf/article/view/85674. Acesso em: 20 apr. 2024.