@book { DieEntwicklungvonFinanzsystemenundKomplementaritt,
    title = "Die Entwicklung von Finanzsystemen und Komplementarität",
    author = "Manuel {Alfonso Ulrich}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1102741"
}