@book { DieZinsmargeundihreDeterminanten,
    title = "Die Zinsmarge und ihre Determinanten",
    author = "Annette D. {Olbrisch}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13682",
    url = "https://www.peterlang.com/document/1068272"
}