@book { RekonstruktioninderGartenpflege,
    title = "Rekonstruktion in der Gartenpflege",
    author = "Géza {Hajós} and Joachim {Wolschke-Bulmahn}",
    year = "2021",
    publisher = "Meidenbauer",
    address = ", Germany",
    url = "https://www.peterlang.com/document/1104098"
}