@book { PersonengesellschafteninSteuerverfahren,
    title = "Personengesellschaften in Steuerverfahren",
    author = "Nina {Erm}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-07140-5",
    url = "https://www.peterlang.com/document/1050757"
}