@book { ZwischenBurnoutundspirituellerErneuerung,
    title = "Zwischen Burnout und spiritueller Erneuerung",
    author = "Andreas {von Heyl}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096242"
}