@book { GerhartHauptmann,
    title = "Gerhart Hauptmann",
    subtitle = "Religious Syncretism and Eastern Religions",
    author = "Philip {Mellen}",
    year = "1984",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1073482"
}