@book { SparkassenpolitikinDeutschland,
    title = "Sparkassenpolitik in Deutschland",
    author = "Timo {Becker}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b10908",
    url = "https://www.peterlang.com/document/1110005"
}