@book { EinequantitativeAnalyseinternationalerKonjunkturzyklen,
    title = "Eine quantitative Analyse internationaler Konjunkturzyklen",
    author = "Thomas {Harjes}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1090623"
}