@book { FlexibleLagersysteme,
    title = "Flexible Lagersysteme",
    author = "Hans-Dietrich {Haasis} and Marco {Plöger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107243"
}