@book { eLearninginderBetriebswirtschaftlichenSteuerlehre,
    title = "eLearning in der Betriebswirtschaftlichen Steuerlehre",
    author = "Michael {Albrecht}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096244"
}