@book { BiofeedbackundAngstbewltigung,
    title = "Biofeedback und Angstbewältigung",
    subtitle = "Eine vergleichende Studie zur Therapie sozialer Ängste",
    author = "Christina {Wildgruber}",
    year = "1980",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1072140"
}