@book { 50JahreMusikwissenschaftlichesInstitutinHamburg,
    title = "50 Jahre Musikwissenschaftliches Institut in Hamburg",
    author = "Peter {Petersen} and Helmut {Rösing}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1088937"
}