 @article{dietrich_drude_2015, title={Variation in Tupi languages: Genealogy, language change, and typology}, volume={10}, ISSN={1981-8122}, url={https://doi.org/10.1590/1981-81222015000200002}, DOI={10.1590/1981-81222015000200002}, number={2}, journal={Boletim do Museu Paraense Emílio Goeldi. Ciências Humanas}, publisher={MCTI/Museu Paraense Emílio Goeldi}, author={Dietrich, Wolf and Drude, Sebastian}, year={2015}, month={May}, pages={213–215} }