@book { MarktplatzfrBusinesstoBusinessB2BKooperationenEnterpriseJavaBeansEJB,
    title = "Marktplatz für Business to Business (B2B)-Kooperationen: Enterprise Java Beans (EJB)",
    author = "Ralf {Beckmann}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832442255",
    url = "https://m.diplom.de/document/219841"
}