@book { berseekaufimAgrarhandel,
    title = "Überseekauf im Agrarhandel",
    author = "Tristan {Wegner}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02785-3",
    url = "https://www.peterlang.com/document/1047507"
}