@book { DasProblemderLagenbestimmunganderVioline,
    title = "Das Problem der Lagenbestimmung an der Violine",
    author = "Norbert {Matros}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135598"
}