@book { ElGuaranCorrentino,
    title = "El Guaraní Correntino",
    author = "Leonardo {Cerno}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03112-6",
    url = "https://www.peterlang.com/document/1047804"
}