@book { LiquidittszusagendesGmbHGesellschafters,
    title = "Liquiditätszusagen des GmbH-Gesellschafters",
    author = "Katrin {Forschbach}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1089692"
}