@book { Contactoslingusticosnasequnciadaexpansoportuguesa,
    title = "Contactos linguísticos na sequência da expansão portuguesa",
    author = "Gerda {Hassler} and Barbara {Schäfer-Prieß}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18516",
    url = "https://www.peterlang.com/document/1061475"
}