@book { JenseitsdesMainstreams,
    title = "Jenseits des Mainstreams",
    subtitle = "Alternative Denk- und Forschungsansätze in Biologie und Medizin",
    author = "Walter {Feigl} and Karl {Edlinger} and Günther {Fleck}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097072"
}