@book { DieVerhltnismigkeitdesDopingkontrollsystems,
    title = "Die Verhältnismäßigkeit des Dopingkontrollsystems",
    author = "Volker {Soyez}",
    year = "2002",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093816"
}