@book { PsychedelicRock,
    title = "Psychedelic Rock",
    subtitle = "Drogenkult und Spiritualität in der psychedelischen Rockmusik und ihre musikpädagogische Reflexion",
    author = "Herbert J. {Hopfgartner}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095279"
}