@book { KomplexittundEmergenzinGesellschaftundNatur,
    title = "Komplexität und Emergenz in Gesellschaft und Natur",
    author = "Dietrich {Fliedner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1088971"
}