@book { NonstandardimsemantischenRaum,
    title = "Nonstandard im semantischen Raum",
    author = "Julia Elisabeth {Klein}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16070",
    url = "https://www.peterlang.com/document/1055636"
}