@book { DerStechapfel,
    title = "Der Stechapfel",
    subtitle = "Zur Ethnobotanik einer Medizin-, Visions- und Sakralpflanze",
    author = "Eva {Kremla}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092347"
}