@book { BrokenGround,
    title = "Broken Ground",
    subtitle = "Building Germany’s Occupation of Poland in the First World War",
    author = "Andrew H. {Kless}",
    year = "2025",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    doi = "10.3726/b18105",
    url = "https://www.peterlang.com/document/1307785"
}