@book { Herzensach,
    title = "Herzensach",
    subtitle = "Roman",
    author = "Gunter {Gerlach}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955202910",
    url = "https://www.dotbooks.de/document/229735"
}