@book { LampenfieberundAngstbeiausbendenMusikern,
    title = "Lampenfieber und Angst bei ausübenden Musikern",
    author = "",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06537-4",
    url = "https://www.peterlang.com/document/1051891"
}